diff options
Diffstat (limited to 'html/smtpd.8.html')
| -rw-r--r-- | html/smtpd.8.html | 298 |
1 files changed, 153 insertions, 145 deletions
diff --git a/html/smtpd.8.html b/html/smtpd.8.html index 672302a..85a8aee 100644 --- a/html/smtpd.8.html +++ b/html/smtpd.8.html @@ -560,7 +560,7 @@ SMTPD(8) SMTPD(8) Available in Postfix version 2.6 and later: - <b><a href="postconf.5.html#smtpd_tls_protocols">smtpd_tls_protocols</a> (see postconf -d output)</b> + <b><a href="postconf.5.html#smtpd_tls_protocols">smtpd_tls_protocols</a> (see 'postconf -d' output)</b> TLS protocols accepted by the Postfix SMTP server with oppor- tunistic TLS encryption. @@ -648,6 +648,13 @@ SMTPD(8) SMTPD(8) The application name passed by Postfix to OpenSSL library ini- tialization functions. + Available in Postfix version 3.9 and later: + + <b><a href="postconf.5.html#smtpd_tls_enable_rpk">smtpd_tls_enable_rpk</a> (no)</b> + Request that remote SMTP clients send an <a href="https://tools.ietf.org/html/rfc7250">RFC7250</a> raw public key + instead of an X.509 certificate, when asking for or requiring + client authentication. + <b>OBSOLETE STARTTLS CONTROLS</b> The following configuration parameters exist for compatibility with Postfix versions before 2.3. Support for these will be removed in a @@ -801,7 +808,7 @@ SMTPD(8) SMTPD(8) receives mail on by way of a proxy or network address transla- tion unit. - <b><a href="postconf.5.html#inet_protocols">inet_protocols</a> (see 'postconf -d output')</b> + <b><a href="postconf.5.html#inet_protocols">inet_protocols</a> (see 'postconf -d' output)</b> The Internet protocols Postfix will attempt to use when making or accepting connections. @@ -840,30 +847,31 @@ SMTPD(8) SMTPD(8) aliased to addresses in other local or remote domains. <b><a href="postconf.5.html#virtual_alias_maps">virtual_alias_maps</a> ($<a href="postconf.5.html#virtual_maps">virtual_maps</a>)</b> - Optional lookup tables that alias specific mail addresses or - domains to other local or remote addresses. + Optional lookup tables with aliases that apply to all recipi- + ents: <a href="local.8.html"><b>local</b>(8)</a>, virtual, and remote; this is unlike <a href="postconf.5.html#alias_maps">alias_maps</a> + that apply only to <a href="local.8.html"><b>local</b>(8)</a> recipients. <b><a href="postconf.5.html#unknown_virtual_alias_reject_code">unknown_virtual_alias_reject_code</a> (550)</b> - The Postfix SMTP server reply code when a recipient address - matches $<a href="postconf.5.html#virtual_alias_domains">virtual_alias_domains</a>, and $<a href="postconf.5.html#virtual_alias_maps">virtual_alias_maps</a> speci- - fies a list of lookup tables that does not match the recipient + The Postfix SMTP server reply code when a recipient address + matches $<a href="postconf.5.html#virtual_alias_domains">virtual_alias_domains</a>, and $<a href="postconf.5.html#virtual_alias_maps">virtual_alias_maps</a> speci- + fies a list of lookup tables that does not match the recipient address. Parameters concerning known/unknown recipients in virtual mailbox domains: <b><a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a> ($<a href="postconf.5.html#virtual_mailbox_maps">virtual_mailbox_maps</a>)</b> - Postfix is the final destination for the specified list of - domains; mail is delivered via the $<a href="postconf.5.html#virtual_transport">virtual_transport</a> mail + Postfix is the final destination for the specified list of + domains; mail is delivered via the $<a href="postconf.5.html#virtual_transport">virtual_transport</a> mail delivery transport. <b><a href="postconf.5.html#virtual_mailbox_maps">virtual_mailbox_maps</a> (empty)</b> - Optional lookup tables with all valid addresses in the domains + Optional lookup tables with all valid addresses in the domains that match $<a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a>. <b><a href="postconf.5.html#unknown_virtual_mailbox_reject_code">unknown_virtual_mailbox_reject_code</a> (550)</b> - The Postfix SMTP server reply code when a recipient address - matches $<a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a>, and $<a href="postconf.5.html#virtual_mailbox_maps">virtual_mailbox_maps</a> + The Postfix SMTP server reply code when a recipient address + matches $<a href="postconf.5.html#virtual_mailbox_domains">virtual_mailbox_domains</a>, and $<a href="postconf.5.html#virtual_mailbox_maps">virtual_mailbox_maps</a> specifies a list of lookup tables that does not match the recip- ient address. @@ -872,7 +880,7 @@ SMTPD(8) SMTPD(8) control client request rates. <b><a href="postconf.5.html#line_length_limit">line_length_limit</a> (2048)</b> - Upon input, long lines are chopped up into pieces of at most + Upon input, long lines are chopped up into pieces of at most this length; upon delivery, long lines are reconstructed. <b><a href="postconf.5.html#queue_minfree">queue_minfree</a> (0)</b> @@ -880,62 +888,62 @@ SMTPD(8) SMTPD(8) tem that is needed to receive mail. <b><a href="postconf.5.html#message_size_limit">message_size_limit</a> (10240000)</b> - The maximal size in bytes of a message, including envelope + The maximal size in bytes of a message, including envelope information. <b><a href="postconf.5.html#smtpd_recipient_limit">smtpd_recipient_limit</a> (1000)</b> - The maximal number of recipients that the Postfix SMTP server + The maximal number of recipients that the Postfix SMTP server accepts per message delivery request. <b><a href="postconf.5.html#smtpd_timeout">smtpd_timeout</a> (normal: 300s, overload: 10s)</b> - When the Postfix SMTP server wants to send an SMTP server - response, how long the Postfix SMTP server will wait for an - underlying network write operation to complete; and when the - Postfix SMTP server Postfix wants to receive an SMTP client - request, how long the Postfix SMTP server will wait for an + When the Postfix SMTP server wants to send an SMTP server + response, how long the Postfix SMTP server will wait for an + underlying network write operation to complete; and when the + Postfix SMTP server Postfix wants to receive an SMTP client + request, how long the Postfix SMTP server will wait for an underlying network read operation to complete. <b><a href="postconf.5.html#smtpd_history_flush_threshold">smtpd_history_flush_threshold</a> (100)</b> - The maximal number of lines in the Postfix SMTP server command - history before it is flushed upon receipt of EHLO, RSET, or end + The maximal number of lines in the Postfix SMTP server command + history before it is flushed upon receipt of EHLO, RSET, or end of DATA. Available in Postfix version 2.3 and later: <b><a href="postconf.5.html#smtpd_peername_lookup">smtpd_peername_lookup</a> (yes)</b> - Attempt to look up the remote SMTP client hostname, and verify + Attempt to look up the remote SMTP client hostname, and verify that the name matches the client IP address. The per SMTP client connection count and request rate limits are imple- - mented in co-operation with the <a href="anvil.8.html"><b>anvil</b>(8)</a> service, and are available in + mented in co-operation with the <a href="anvil.8.html"><b>anvil</b>(8)</a> service, and are available in Postfix version 2.2 and later. <b><a href="postconf.5.html#smtpd_client_connection_count_limit">smtpd_client_connection_count_limit</a> (50)</b> - How many simultaneous connections any client is allowed to make + How many simultaneous connections any client is allowed to make to this service. <b><a href="postconf.5.html#smtpd_client_connection_rate_limit">smtpd_client_connection_rate_limit</a> (0)</b> - The maximal number of connection attempts any client is allowed + The maximal number of connection attempts any client is allowed to make to this service per time unit. <b><a href="postconf.5.html#smtpd_client_message_rate_limit">smtpd_client_message_rate_limit</a> (0)</b> - The maximal number of message delivery requests that any client - is allowed to make to this service per time unit, regardless of + The maximal number of message delivery requests that any client + is allowed to make to this service per time unit, regardless of whether or not Postfix actually accepts those messages. <b><a href="postconf.5.html#smtpd_client_recipient_rate_limit">smtpd_client_recipient_rate_limit</a> (0)</b> - The maximal number of recipient addresses that any client is - allowed to send to this service per time unit, regardless of + The maximal number of recipient addresses that any client is + allowed to send to this service per time unit, regardless of whether or not Postfix actually accepts those recipients. <b><a href="postconf.5.html#smtpd_client_event_limit_exceptions">smtpd_client_event_limit_exceptions</a> ($<a href="postconf.5.html#mynetworks">mynetworks</a>)</b> - Clients that are excluded from smtpd_client_*_count/rate_limit + Clients that are excluded from smtpd_client_*_count/rate_limit restrictions. Available in Postfix version 2.3 and later: <b><a href="postconf.5.html#smtpd_client_new_tls_session_rate_limit">smtpd_client_new_tls_session_rate_limit</a> (0)</b> - The maximal number of new (i.e., uncached) TLS sessions that a + The maximal number of new (i.e., uncached) TLS sessions that a remote SMTP client is allowed to negotiate with this service per time unit. @@ -943,29 +951,29 @@ SMTPD(8) SMTPD(8) <b><a href="postconf.5.html#smtpd_per_record_deadline">smtpd_per_record_deadline</a> (normal: no, overload: yes)</b> Change the behavior of the <a href="postconf.5.html#smtpd_timeout">smtpd_timeout</a> and <a href="postconf.5.html#smtpd_starttls_timeout">smtpd_start</a>- - <a href="postconf.5.html#smtpd_starttls_timeout">tls_timeout</a> time limits, from a time limit per read or write - system call, to a time limit to send or receive a complete - record (an SMTP command line, SMTP response line, SMTP message + <a href="postconf.5.html#smtpd_starttls_timeout">tls_timeout</a> time limits, from a time limit per read or write + system call, to a time limit to send or receive a complete + record (an SMTP command line, SMTP response line, SMTP message content line, or TLS protocol message). Available in Postfix version 3.1 and later: <b><a href="postconf.5.html#smtpd_client_auth_rate_limit">smtpd_client_auth_rate_limit</a> (0)</b> - The maximal number of AUTH commands that any client is allowed - to send to this service per time unit, regardless of whether or + The maximal number of AUTH commands that any client is allowed + to send to this service per time unit, regardless of whether or not Postfix actually accepts those commands. Available in Postfix version 3.7 and later: <b><a href="postconf.5.html#smtpd_per_request_deadline">smtpd_per_request_deadline</a> (normal: no, overload: yes)</b> Change the behavior of the <a href="postconf.5.html#smtpd_timeout">smtpd_timeout</a> and <a href="postconf.5.html#smtpd_starttls_timeout">smtpd_start</a>- - <a href="postconf.5.html#smtpd_starttls_timeout">tls_timeout</a> time limits, from a time limit per plaintext or TLS - read or write call, to a combined time limit for receiving a - complete SMTP request and for sending a complete SMTP response. + <a href="postconf.5.html#smtpd_starttls_timeout">tls_timeout</a> time limits, from a time limit per plaintext or TLS + read or write call, to a combined time limit for receiving a + complete SMTP request and for sending a complete SMTP response. <b><a href="postconf.5.html#smtpd_min_data_rate">smtpd_min_data_rate</a> (500)</b> - The minimum plaintext data transfer rate in bytes/second for - DATA and BDAT requests, when deadlines are enabled with + The minimum plaintext data transfer rate in bytes/second for + DATA and BDAT requests, when deadlines are enabled with <a href="postconf.5.html#smtpd_per_request_deadline">smtpd_per_request_deadline</a>. <b><a href="postconf.5.html#header_from_format">header_from_format</a> (standard)</b> @@ -974,27 +982,27 @@ SMTPD(8) SMTPD(8) Available in Postfix version 3.8 and later: <b><a href="postconf.5.html#smtpd_client_ipv4_prefix_length">smtpd_client_ipv4_prefix_length</a> (32)</b> - Aggregate smtpd_client_*_count and smtpd_client_*_rate statis- + Aggregate smtpd_client_*_count and smtpd_client_*_rate statis- tics by IPv4 network blocks with the specified network prefix. <b><a href="postconf.5.html#smtpd_client_ipv6_prefix_length">smtpd_client_ipv6_prefix_length</a> (84)</b> - Aggregate smtpd_client_*_count and smtpd_client_*_rate statis- + Aggregate smtpd_client_*_count and smtpd_client_*_rate statis- tics by IPv6 network blocks with the specified network prefix. Available in Postfix 3.9, 3.8.1, 3.7.6, 3.6.10, 3.5.20 and later: <b><a href="postconf.5.html#smtpd_forbid_unauth_pipelining">smtpd_forbid_unauth_pipelining</a> (Postfix</b> ><b>= 3.9: yes)</b> - Disconnect remote SMTP clients that violate <a href="https://tools.ietf.org/html/rfc2920">RFC 2920</a> (or 5321) + Disconnect remote SMTP clients that violate <a href="https://tools.ietf.org/html/rfc2920">RFC 2920</a> (or 5321) command pipelining constraints. Available in Postfix 3.9, 3.8.4, 3.7.9, 3.6.13, 3.5.23 and later: - <b><a href="postconf.5.html#smtpd_forbid_bare_newline">smtpd_forbid_bare_newline</a> (Postfix</b> < <b>3.9: no)</b> - Reject or restrict input lines from an SMTP client that end in + <b><a href="postconf.5.html#smtpd_forbid_bare_newline">smtpd_forbid_bare_newline</a> (Postfix</b> ><b>= 3.9: normalize)</b> + Reject or restrict input lines from an SMTP client that end in <LF> instead of the standard <CR><LF>. <b><a href="postconf.5.html#smtpd_forbid_bare_newline_exclusions">smtpd_forbid_bare_newline_exclusions</a> ($<a href="postconf.5.html#mynetworks">mynetworks</a>)</b> - Exclude the specified clients from <a href="postconf.5.html#smtpd_forbid_bare_newline">smtpd_forbid_bare_newline</a> + Exclude the specified clients from <a href="postconf.5.html#smtpd_forbid_bare_newline">smtpd_forbid_bare_newline</a> enforcement. Available in Postfix 3.9, 3.8.5, 3.7.10, 3.6.14, 3.5.24 and later: @@ -1004,55 +1012,55 @@ SMTPD(8) SMTPD(8) request with "<a href="postconf.5.html#smtpd_forbid_bare_newline">smtpd_forbid_bare_newline</a> = reject". <b>TARPIT CONTROLS</b> - When a remote SMTP client makes errors, the Postfix SMTP server can - insert delays before responding. This can help to slow down run-away - software. The behavior is controlled by an error counter that counts + When a remote SMTP client makes errors, the Postfix SMTP server can + insert delays before responding. This can help to slow down run-away + software. The behavior is controlled by an error counter that counts the number of errors within an SMTP session that a client makes without delivering mail. <b><a href="postconf.5.html#smtpd_error_sleep_time">smtpd_error_sleep_time</a> (1s)</b> - With Postfix version 2.1 and later: the SMTP server response - delay after a client has made more than $<a href="postconf.5.html#smtpd_soft_error_limit">smtpd_soft_error_limit</a> - errors, and fewer than $<a href="postconf.5.html#smtpd_hard_error_limit">smtpd_hard_error_limit</a> errors, without + With Postfix version 2.1 and later: the SMTP server response + delay after a client has made more than $<a href="postconf.5.html#smtpd_soft_error_limit">smtpd_soft_error_limit</a> + errors, and fewer than $<a href="postconf.5.html#smtpd_hard_error_limit">smtpd_hard_error_limit</a> errors, without delivering mail. <b><a href="postconf.5.html#smtpd_soft_error_limit">smtpd_soft_error_limit</a> (10)</b> - The number of errors a remote SMTP client is allowed to make - without delivering mail before the Postfix SMTP server slows + The number of errors a remote SMTP client is allowed to make + without delivering mail before the Postfix SMTP server slows down all its responses. <b><a href="postconf.5.html#smtpd_hard_error_limit">smtpd_hard_error_limit</a> (normal: 20, overload: 1)</b> - The maximal number of errors a remote SMTP client is allowed to + The maximal number of errors a remote SMTP client is allowed to make without delivering mail. <b><a href="postconf.5.html#smtpd_junk_command_limit">smtpd_junk_command_limit</a> (normal: 100, overload: 1)</b> - The number of junk commands (NOOP, VRFY, ETRN or RSET) that a - remote SMTP client can send before the Postfix SMTP server + The number of junk commands (NOOP, VRFY, ETRN or RSET) that a + remote SMTP client can send before the Postfix SMTP server starts to increment the error counter with each junk command. Available in Postfix version 2.1 and later: <b><a href="postconf.5.html#smtpd_recipient_overshoot_limit">smtpd_recipient_overshoot_limit</a> (1000)</b> - The number of recipients that a remote SMTP client can send in + The number of recipients that a remote SMTP client can send in excess of the limit specified with $<a href="postconf.5.html#smtpd_recipient_limit">smtpd_recipient_limit</a>, - before the Postfix SMTP server increments the per-session error + before the Postfix SMTP server increments the per-session error count for each excess recipient. <b>ACCESS POLICY DELEGATION CONTROLS</b> - As of version 2.1, Postfix can be configured to delegate access policy - decisions to an external server that runs outside Postfix. See the + As of version 2.1, Postfix can be configured to delegate access policy + decisions to an external server that runs outside Postfix. See the file <a href="SMTPD_POLICY_README.html">SMTPD_POLICY_README</a> for more information. <b><a href="postconf.5.html#smtpd_policy_service_max_idle">smtpd_policy_service_max_idle</a> (300s)</b> - The time after which an idle SMTPD policy service connection is + The time after which an idle SMTPD policy service connection is closed. <b><a href="postconf.5.html#smtpd_policy_service_max_ttl">smtpd_policy_service_max_ttl</a> (1000s)</b> - The time after which an active SMTPD policy service connection + The time after which an active SMTPD policy service connection is closed. <b><a href="postconf.5.html#smtpd_policy_service_timeout">smtpd_policy_service_timeout</a> (100s)</b> - The time limit for connecting to, writing to, or receiving from + The time limit for connecting to, writing to, or receiving from a delegated SMTPD policy server. Available in Postfix version 3.0 and later: @@ -1062,81 +1070,81 @@ SMTPD(8) SMTPD(8) The default action when an SMTPD policy service request fails. <b><a href="postconf.5.html#smtpd_policy_service_request_limit">smtpd_policy_service_request_limit</a> (0)</b> - The maximal number of requests per SMTPD policy service connec- + The maximal number of requests per SMTPD policy service connec- tion, or zero (no limit). <b><a href="postconf.5.html#smtpd_policy_service_try_limit">smtpd_policy_service_try_limit</a> (2)</b> - The maximal number of attempts to send an SMTPD policy service + The maximal number of attempts to send an SMTPD policy service request before giving up. <b><a href="postconf.5.html#smtpd_policy_service_retry_delay">smtpd_policy_service_retry_delay</a> (1s)</b> - The delay between attempts to resend a failed SMTPD policy ser- + The delay between attempts to resend a failed SMTPD policy ser- vice request. Available in Postfix version 3.1 and later: <b><a href="postconf.5.html#smtpd_policy_service_policy_context">smtpd_policy_service_policy_context</a> (empty)</b> - Optional information that the Postfix SMTP server specifies in - the "policy_context" attribute of a policy service request - (originally, to share the same service endpoint among multiple + Optional information that the Postfix SMTP server specifies in + the "policy_context" attribute of a policy service request + (originally, to share the same service endpoint among multiple <a href="postconf.5.html#check_policy_service">check_policy_service</a> clients). <b>ACCESS CONTROLS</b> - The <a href="SMTPD_ACCESS_README.html">SMTPD_ACCESS_README</a> document gives an introduction to all the SMTP + The <a href="SMTPD_ACCESS_README.html">SMTPD_ACCESS_README</a> document gives an introduction to all the SMTP server access control features. <b><a href="postconf.5.html#smtpd_delay_reject">smtpd_delay_reject</a> (yes)</b> - Wait until the RCPT TO command before evaluating + Wait until the RCPT TO command before evaluating $<a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a>, $<a href="postconf.5.html#smtpd_helo_restrictions">smtpd_helo_restrictions</a> and $<a href="postconf.5.html#smtpd_sender_restrictions">smtpd_sender_restrictions</a>, or wait until the ETRN command - before evaluating $<a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a> and + before evaluating $<a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a> and $<a href="postconf.5.html#smtpd_helo_restrictions">smtpd_helo_restrictions</a>. <b><a href="postconf.5.html#parent_domain_matches_subdomains">parent_domain_matches_subdomains</a> (see 'postconf -d' output)</b> - A list of Postfix features where the pattern "example.com" also - matches subdomains of example.com, instead of requiring an + A list of Postfix features where the pattern "example.com" also + matches subdomains of example.com, instead of requiring an explicit ".example.com" pattern. <b><a href="postconf.5.html#smtpd_client_restrictions">smtpd_client_restrictions</a> (empty)</b> - Optional restrictions that the Postfix SMTP server applies in + Optional restrictions that the Postfix SMTP server applies in the context of a client connection request. <b><a href="postconf.5.html#smtpd_helo_required">smtpd_helo_required</a> (no)</b> - Require that a remote SMTP client introduces itself with the - HELO or EHLO command before sending the MAIL command or other + Require that a remote SMTP client introduces itself with the + HELO or EHLO command before sending the MAIL command or other commands that require EHLO negotiation. <b><a href="postconf.5.html#smtpd_helo_restrictions">smtpd_helo_restrictions</a> (empty)</b> - Optional restrictions that the Postfix SMTP server applies in + Optional restrictions that the Postfix SMTP server applies in the context of a client HELO command. <b><a href="postconf.5.html#smtpd_sender_restrictions">smtpd_sender_restrictions</a> (empty)</b> - Optional restrictions that the Postfix SMTP server applies in + Optional restrictions that the Postfix SMTP server applies in the context of a client MAIL FROM command. <b><a href="postconf.5.html#smtpd_recipient_restrictions">smtpd_recipient_restrictions</a> (see 'postconf -d' output)</b> - Optional restrictions that the Postfix SMTP server applies in - the context of a client RCPT TO command, after + Optional restrictions that the Postfix SMTP server applies in + the context of a client RCPT TO command, after <a href="postconf.5.html#smtpd_relay_restrictions">smtpd_relay_restrictions</a>. <b><a href="postconf.5.html#smtpd_etrn_restrictions">smtpd_etrn_restrictions</a> (empty)</b> - Optional restrictions that the Postfix SMTP server applies in + Optional restrictions that the Postfix SMTP server applies in the context of a client ETRN command. <b><a href="postconf.5.html#allow_untrusted_routing">allow_untrusted_routing</a> (no)</b> - Forward mail with sender-specified routing - (user[@%!]remote[@%!]site) from untrusted clients to destina- + Forward mail with sender-specified routing + (user[@%!]remote[@%!]site) from untrusted clients to destina- tions matching $<a href="postconf.5.html#relay_domains">relay_domains</a>. <b><a href="postconf.5.html#smtpd_restriction_classes">smtpd_restriction_classes</a> (empty)</b> User-defined aliases for groups of access restrictions. <b><a href="postconf.5.html#smtpd_null_access_lookup_key">smtpd_null_access_lookup_key</a> (</b><><b>)</b> - The lookup key to be used in SMTP <a href="access.5.html"><b>access</b>(5)</a> tables instead of + The lookup key to be used in SMTP <a href="access.5.html"><b>access</b>(5)</a> tables instead of the null sender address. <b><a href="postconf.5.html#permit_mx_backup_networks">permit_mx_backup_networks</a> (empty)</b> - Restrict the use of the <a href="postconf.5.html#permit_mx_backup">permit_mx_backup</a> SMTP access feature to + Restrict the use of the <a href="postconf.5.html#permit_mx_backup">permit_mx_backup</a> SMTP access feature to only domains whose primary MX hosts match the listed networks. Available in Postfix version 2.0 and later: @@ -1146,19 +1154,19 @@ SMTPD(8) SMTPD(8) applies in the context of the SMTP DATA command. <b><a href="postconf.5.html#smtpd_expansion_filter">smtpd_expansion_filter</a> (see 'postconf -d' output)</b> - What characters are allowed in $name expansions of RBL reply + What characters are allowed in $name expansions of RBL reply templates. Available in Postfix version 2.1 and later: <b><a href="postconf.5.html#smtpd_reject_unlisted_sender">smtpd_reject_unlisted_sender</a> (no)</b> - Request that the Postfix SMTP server rejects mail from unknown - sender addresses, even when no explicit <a href="postconf.5.html#reject_unlisted_sender">reject_unlisted_sender</a> + Request that the Postfix SMTP server rejects mail from unknown + sender addresses, even when no explicit <a href="postconf.5.html#reject_unlisted_sender">reject_unlisted_sender</a> access restriction is specified. <b><a href="postconf.5.html#smtpd_reject_unlisted_recipient">smtpd_reject_unlisted_recipient</a> (yes)</b> - Request that the Postfix SMTP server rejects mail for unknown - recipient addresses, even when no explicit + Request that the Postfix SMTP server rejects mail for unknown + recipient addresses, even when no explicit <a href="postconf.5.html#reject_unlisted_recipient">reject_unlisted_recipient</a> access restriction is specified. Available in Postfix version 2.2 and later: @@ -1172,17 +1180,17 @@ SMTPD(8) SMTPD(8) <b><a href="postconf.5.html#smtpd_relay_restrictions">smtpd_relay_restrictions</a> (<a href="postconf.5.html#permit_mynetworks">permit_mynetworks</a>, <a href="postconf.5.html#permit_sasl_authenticated">permit_sasl_authenticated</a>,</b> <b><a href="postconf.5.html#defer_unauth_destination">defer_unauth_destination</a>)</b> Access restrictions for mail relay control that the Postfix SMTP - server applies in the context of the RCPT TO command, before + server applies in the context of the RCPT TO command, before <a href="postconf.5.html#smtpd_recipient_restrictions">smtpd_recipient_restrictions</a>. <b>SENDER AND RECIPIENT ADDRESS VERIFICATION CONTROLS</b> - Postfix version 2.1 introduces sender and recipient address verifica- + Postfix version 2.1 introduces sender and recipient address verifica- tion. This feature is implemented by sending probe email messages that are not actually delivered. This feature is requested via the - <a href="postconf.5.html#reject_unverified_sender">reject_unverified_sender</a> and <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipient</a> access - restrictions. The status of verification probes is maintained by the - <a href="verify.8.html"><b>verify</b>(8)</a> server. See the file <a href="ADDRESS_VERIFICATION_README.html">ADDRESS_VERIFICATION_README</a> for infor- - mation about how to configure and operate the Postfix sender/recipient + <a href="postconf.5.html#reject_unverified_sender">reject_unverified_sender</a> and <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipient</a> access + restrictions. The status of verification probes is maintained by the + <a href="verify.8.html"><b>verify</b>(8)</a> server. See the file <a href="ADDRESS_VERIFICATION_README.html">ADDRESS_VERIFICATION_README</a> for infor- + mation about how to configure and operate the Postfix sender/recipient address verification service. <b><a href="postconf.5.html#address_verify_poll_count">address_verify_poll_count</a> (normal: 3, overload: 1)</b> @@ -1194,7 +1202,7 @@ SMTPD(8) SMTPD(8) fication request in progress. <b><a href="postconf.5.html#address_verify_sender">address_verify_sender</a> ($<a href="postconf.5.html#double_bounce_sender">double_bounce_sender</a>)</b> - The sender address to use in address verification probes; prior + The sender address to use in address verification probes; prior to Postfix 2.5 the default was "postmaster". <b><a href="postconf.5.html#unverified_sender_reject_code">unverified_sender_reject_code</a> (450)</b> @@ -1202,18 +1210,18 @@ SMTPD(8) SMTPD(8) address is rejected by the <a href="postconf.5.html#reject_unverified_sender">reject_unverified_sender</a> restriction. <b><a href="postconf.5.html#unverified_recipient_reject_code">unverified_recipient_reject_code</a> (450)</b> - The numerical Postfix SMTP server response when a recipient - address is rejected by the <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipient</a> restric- + The numerical Postfix SMTP server response when a recipient + address is rejected by the <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipient</a> restric- tion. Available in Postfix version 2.6 and later: <b><a href="postconf.5.html#unverified_sender_defer_code">unverified_sender_defer_code</a> (450)</b> - The numerical Postfix SMTP server response code when a sender + The numerical Postfix SMTP server response code when a sender address probe fails due to a temporary error condition. <b><a href="postconf.5.html#unverified_recipient_defer_code">unverified_recipient_defer_code</a> (450)</b> - The numerical Postfix SMTP server response when a recipient + The numerical Postfix SMTP server response when a recipient address probe fails due to a temporary error condition. <b><a href="postconf.5.html#unverified_sender_reject_reason">unverified_sender_reject_reason</a> (empty)</b> @@ -1225,17 +1233,17 @@ SMTPD(8) SMTPD(8) <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipient</a>. <b><a href="postconf.5.html#unverified_sender_tempfail_action">unverified_sender_tempfail_action</a> ($<a href="postconf.5.html#reject_tempfail_action">reject_tempfail_action</a>)</b> - The Postfix SMTP server's action when <a href="postconf.5.html#reject_unverified_sender">reject_unverified_sender</a> + The Postfix SMTP server's action when <a href="postconf.5.html#reject_unverified_sender">reject_unverified_sender</a> fails due to a temporary error condition. <b><a href="postconf.5.html#unverified_recipient_tempfail_action">unverified_recipient_tempfail_action</a> ($<a href="postconf.5.html#reject_tempfail_action">reject_tempfail_action</a>)</b> - The Postfix SMTP server's action when <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipi</a>- + The Postfix SMTP server's action when <a href="postconf.5.html#reject_unverified_recipient">reject_unverified_recipi</a>- <a href="postconf.5.html#reject_unverified_recipient">ent</a> fails due to a temporary error condition. Available with Postfix 2.9 and later: <b><a href="postconf.5.html#address_verify_sender_ttl">address_verify_sender_ttl</a> (0s)</b> - The time between changes in the time-dependent portion of + The time between changes in the time-dependent portion of address verification probe sender addresses. <b>ACCESS CONTROL RESPONSES</b> @@ -1247,36 +1255,36 @@ SMTPD(8) SMTPD(8) map "reject" action. <b><a href="postconf.5.html#defer_code">defer_code</a> (450)</b> - The numerical Postfix SMTP server response code when a remote + The numerical Postfix SMTP server response code when a remote SMTP client request is rejected by the "defer" restriction. <b><a href="postconf.5.html#invalid_hostname_reject_code">invalid_hostname_reject_code</a> (501)</b> - The numerical Postfix SMTP server response code when the client - HELO or EHLO command parameter is rejected by the + The numerical Postfix SMTP server response code when the client + HELO or EHLO command parameter is rejected by the <a href="postconf.5.html#reject_invalid_helo_hostname">reject_invalid_helo_hostname</a> restriction. <b><a href="postconf.5.html#maps_rbl_reject_code">maps_rbl_reject_code</a> (554)</b> - The numerical Postfix SMTP server response code when a remote - SMTP client request is blocked by the <a href="postconf.5.html#reject_rbl_client">reject_rbl_client</a>, + The numerical Postfix SMTP server response code when a remote + SMTP client request is blocked by the <a href="postconf.5.html#reject_rbl_client">reject_rbl_client</a>, <a href="postconf.5.html#reject_rhsbl_client">reject_rhsbl_client</a>, <a href="postconf.5.html#reject_rhsbl_reverse_client">reject_rhsbl_reverse_client</a>, <a href="postconf.5.html#reject_rhsbl_sender">reject_rhsbl_sender</a> or <a href="postconf.5.html#reject_rhsbl_recipient">reject_rhsbl_recipient</a> restriction. <b><a href="postconf.5.html#non_fqdn_reject_code">non_fqdn_reject_code</a> (504)</b> - The numerical Postfix SMTP server reply code when a client - request is rejected by the <a href="postconf.5.html#reject_non_fqdn_helo_hostname">reject_non_fqdn_helo_hostname</a>, + The numerical Postfix SMTP server reply code when a client + request is rejected by the <a href="postconf.5.html#reject_non_fqdn_helo_hostname">reject_non_fqdn_helo_hostname</a>, <a href="postconf.5.html#reject_non_fqdn_sender">reject_non_fqdn_sender</a> or <a href="postconf.5.html#reject_non_fqdn_recipient">reject_non_fqdn_recipient</a> restriction. <b><a href="postconf.5.html#plaintext_reject_code">plaintext_reject_code</a> (450)</b> - The numerical Postfix SMTP server response code when a request + The numerical Postfix SMTP server response code when a request is rejected by the <b><a href="postconf.5.html#reject_plaintext_session">reject_plaintext_session</a></b> restriction. <b><a href="postconf.5.html#reject_code">reject_code</a> (554)</b> - The numerical Postfix SMTP server response code when a remote + The numerical Postfix SMTP server response code when a remote SMTP client request is rejected by the "reject" restriction. <b><a href="postconf.5.html#relay_domains_reject_code">relay_domains_reject_code</a> (554)</b> - The numerical Postfix SMTP server response code when a client - request is rejected by the <a href="postconf.5.html#reject_unauth_destination">reject_unauth_destination</a> recipient + The numerical Postfix SMTP server response code when a client + request is rejected by the <a href="postconf.5.html#reject_unauth_destination">reject_unauth_destination</a> recipient restriction. <b><a href="postconf.5.html#unknown_address_reject_code">unknown_address_reject_code</a> (450)</b> @@ -1284,24 +1292,24 @@ SMTPD(8) SMTPD(8) a sender or recipient address because its domain is unknown. <b><a href="postconf.5.html#unknown_client_reject_code">unknown_client_reject_code</a> (450)</b> - The numerical Postfix SMTP server response code when a client - without valid address <=> name mapping is rejected by the + The numerical Postfix SMTP server response code when a client + without valid address <=> name mapping is rejected by the <a href="postconf.5.html#reject_unknown_client_hostname">reject_unknown_client_hostname</a> restriction. <b><a href="postconf.5.html#unknown_hostname_reject_code">unknown_hostname_reject_code</a> (450)</b> - The numerical Postfix SMTP server response code when the host- - name specified with the HELO or EHLO command is rejected by the + The numerical Postfix SMTP server response code when the host- + name specified with the HELO or EHLO command is rejected by the <a href="postconf.5.html#reject_unknown_helo_hostname">reject_unknown_helo_hostname</a> restriction. Available in Postfix version 2.0 and later: <b><a href="postconf.5.html#default_rbl_reply">default_rbl_reply</a> (see 'postconf -d' output)</b> - The default Postfix SMTP server response template for a request + The default Postfix SMTP server response template for a request that is rejected by an RBL-based restriction. <b><a href="postconf.5.html#multi_recipient_bounce_reject_code">multi_recipient_bounce_reject_code</a> (550)</b> - The numerical Postfix SMTP server response code when a remote - SMTP client request is blocked by the <a href="postconf.5.html#reject_multi_recipient_bounce">reject_multi_recipi</a>- + The numerical Postfix SMTP server response code when a remote + SMTP client request is blocked by the <a href="postconf.5.html#reject_multi_recipient_bounce">reject_multi_recipi</a>- <a href="postconf.5.html#reject_multi_recipient_bounce">ent_bounce</a> restriction. <b><a href="postconf.5.html#rbl_reply_maps">rbl_reply_maps</a> (empty)</b> @@ -1311,52 +1319,52 @@ SMTPD(8) SMTPD(8) <b><a href="postconf.5.html#access_map_defer_code">access_map_defer_code</a> (450)</b> The numerical Postfix SMTP server response code for an <a href="access.5.html"><b>access</b>(5)</a> - map "defer" action, including "<a href="postconf.5.html#defer_if_permit">defer_if_permit</a>" or + map "defer" action, including "<a href="postconf.5.html#defer_if_permit">defer_if_permit</a>" or "<a href="postconf.5.html#defer_if_reject">defer_if_reject</a>". <b><a href="postconf.5.html#reject_tempfail_action">reject_tempfail_action</a> (<a href="postconf.5.html#defer_if_permit">defer_if_permit</a>)</b> - The Postfix SMTP server's action when a reject-type restriction + The Postfix SMTP server's action when a reject-type restriction fails due to a temporary error condition. <b><a href="postconf.5.html#unknown_helo_hostname_tempfail_action">unknown_helo_hostname_tempfail_action</a> ($<a href="postconf.5.html#reject_tempfail_action">reject_tempfail_action</a>)</b> - The Postfix SMTP server's action when <a href="postconf.5.html#reject_unknown_helo_hostname">reject_unknown_helo_host</a>- + The Postfix SMTP server's action when <a href="postconf.5.html#reject_unknown_helo_hostname">reject_unknown_helo_host</a>- <a href="postconf.5.html#reject_unknown_helo_hostname">name</a> fails due to a temporary error condition. <b><a href="postconf.5.html#unknown_address_tempfail_action">unknown_address_tempfail_action</a> ($<a href="postconf.5.html#reject_tempfail_action">reject_tempfail_action</a>)</b> - The Postfix SMTP server's action when - <a href="postconf.5.html#reject_unknown_sender_domain">reject_unknown_sender_domain</a> or <a href="postconf.5.html#reject_unknown_recipient_domain">reject_unknown_recipient_domain</a> + The Postfix SMTP server's action when + <a href="postconf.5.html#reject_unknown_sender_domain">reject_unknown_sender_domain</a> or <a href="postconf.5.html#reject_unknown_recipient_domain">reject_unknown_recipient_domain</a> fail due to a temporary error condition. <b>MISCELLANEOUS CONTROLS</b> <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b> - The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> con- + The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> con- figuration files. <b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b> - How much time a Postfix daemon process may take to handle a + How much time a Postfix daemon process may take to handle a request before it is terminated by a built-in watchdog timer. <b><a href="postconf.5.html#command_directory">command_directory</a> (see 'postconf -d' output)</b> The location of all postfix administrative commands. <b><a href="postconf.5.html#double_bounce_sender">double_bounce_sender</a> (double-bounce)</b> - The sender address of postmaster notifications that are gener- + The sender address of postmaster notifications that are gener- ated by the mail system. <b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b> - The time limit for sending or receiving information over an + The time limit for sending or receiving information over an internal communication channel. <b><a href="postconf.5.html#mail_name">mail_name</a> (Postfix)</b> - The mail system name that is displayed in Received: headers, in + The mail system name that is displayed in Received: headers, in the SMTP greeting banner, and in bounced mail. <b><a href="postconf.5.html#mail_owner">mail_owner</a> (postfix)</b> - The UNIX system account that owns the Postfix queue and most + The UNIX system account that owns the Postfix queue and most Postfix daemon processes. <b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b> - The maximum amount of time that an idle Postfix daemon process + The maximum amount of time that an idle Postfix daemon process waits for an incoming connection before terminating voluntarily. <b><a href="postconf.5.html#max_use">max_use</a> (100)</b> @@ -1367,11 +1375,11 @@ SMTPD(8) SMTPD(8) The internet hostname of this mail system. <b><a href="postconf.5.html#mynetworks">mynetworks</a> (see 'postconf -d' output)</b> - The list of "trusted" remote SMTP clients that have more privi- + The list of "trusted" remote SMTP clients that have more privi- leges than "strangers". <b><a href="postconf.5.html#myorigin">myorigin</a> ($<a href="postconf.5.html#myhostname">myhostname</a>)</b> - The domain name that locally-posted mail appears to come from, + The domain name that locally-posted mail appears to come from, and that locally posted mail is delivered to. <b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b> @@ -1384,24 +1392,24 @@ SMTPD(8) SMTPD(8) The location of the Postfix top-level queue directory. <b><a href="postconf.5.html#recipient_delimiter">recipient_delimiter</a> (empty)</b> - The set of characters that can separate an email address local- + The set of characters that can separate an email address local- part, user name, or a .forward file name from its extension. <b><a href="postconf.5.html#smtpd_banner">smtpd_banner</a> ($<a href="postconf.5.html#myhostname">myhostname</a> ESMTP $<a href="postconf.5.html#mail_name">mail_name</a>)</b> - The text that follows the 220 status code in the SMTP greeting + The text that follows the 220 status code in the SMTP greeting banner. <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b> The syslog facility of Postfix logging. <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b> - A prefix that is prepended to the process name in syslog + A prefix that is prepended to the process name in syslog records, so that, for example, "smtpd" becomes "prefix/smtpd". Available in Postfix version 2.2 and later: <b><a href="postconf.5.html#smtpd_forbidden_commands">smtpd_forbidden_commands</a> (CONNECT GET POST <a href="regexp_table.5.html">regexp</a>:{{/^[^A-Z]/ Bogus}})</b> - List of commands that cause the Postfix SMTP server to immedi- + List of commands that cause the Postfix SMTP server to immedi- ately terminate the session with a 221 code. Available in Postfix version 2.5 and later: @@ -1418,7 +1426,7 @@ SMTPD(8) SMTPD(8) Available in Postfix 3.4 and later: <b><a href="postconf.5.html#smtpd_reject_footer_maps">smtpd_reject_footer_maps</a> (empty)</b> - Lookup tables, indexed by the complete Postfix SMTP server 4xx + Lookup tables, indexed by the complete Postfix SMTP server 4xx or 5xx response, with reject footer templates. <b>SEE ALSO</b> |