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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 08:42:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-13 08:42:27 +0000
commit95f5f6d1c3aec1cb62525f5162e71a4157aca717 (patch)
tree8633546094df32b27d719c7578537e6062aa52e3 /html/lmtp.8.html
parentReleasing progress-linux version 3.8.6-1~progress7.99u1. (diff)
downloadpostfix-95f5f6d1c3aec1cb62525f5162e71a4157aca717.tar.xz
postfix-95f5f6d1c3aec1cb62525f5162e71a4157aca717.zip
Merging upstream version 3.9.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--html/lmtp.8.html248
1 files changed, 135 insertions, 113 deletions
diff --git a/html/lmtp.8.html b/html/lmtp.8.html
index 1144ee8..4cc187c 100644
--- a/html/lmtp.8.html
+++ b/html/lmtp.8.html
@@ -5,88 +5,100 @@
<link rel='stylesheet' type='text/css' href='postfix-doc.css'>
<title> Postfix manual - smtp(8) </title>
</head> <body> <pre>
-SMTP(8) SMTP(8)
+SMTP,(LMTP) SMTP,(LMTP)
<b>NAME</b>
- smtp - Postfix SMTP+LMTP client
+ smtp, lmtp - Postfix SMTP+LMTP client
<b>SYNOPSIS</b>
<b>smtp</b> [generic Postfix daemon options] [flags=DORX]
+ <b>lmtp</b> [generic Postfix daemon options] [flags=DORX]
+
<b>DESCRIPTION</b>
The Postfix SMTP+LMTP client implements the SMTP and LMTP mail delivery
protocols. It processes message delivery requests from the queue man-
ager. Each request specifies a queue file, a sender address, a domain
or host to deliver to, and recipient information. This program expects
- to be run from the <a href="master.8.html"><b>master</b>(8)</a> process manager.
+ to be run from the <a href="master.8.html"><b>master</b>(8)</a> process manager. The process name, <b>smtp</b> or
+ <b>lmtp</b>, controls the protocol, and the names of the configuration parame-
+ ters that will be used.
The SMTP+LMTP client updates the queue file and marks recipients as
finished, or it informs the queue manager that delivery should be tried
again at a later time. Delivery status reports are sent to the
<a href="bounce.8.html"><b>bounce</b>(8)</a>, <a href="defer.8.html"><b>defer</b>(8)</a> or <a href="trace.8.html"><b>trace</b>(8)</a> daemon as appropriate.
- The SMTP+LMTP client looks up a list of mail exchanger addresses for
- the destination host, sorts the list by preference, and connects to
- each listed address until it finds a server that responds.
-
- When a server is not reachable, or when mail delivery fails due to a
- recoverable error condition, the SMTP+LMTP client will try to deliver
- the mail to an alternate host.
+ The server lookup strategy is different for SMTP and LMTP, as described
+ in the sections "SMTP SERVER LOOKUP" and "LMTP SERVER LOOKUP".
- After a successful mail transaction, a connection may be saved to the
- <a href="scache.8.html"><b>scache</b>(8)</a> connection cache server, so that it may be used by any
+ After a successful mail transaction, a connection may be saved to the
+ <a href="scache.8.html"><b>scache</b>(8)</a> connection cache server, so that it may be used by any
SMTP+LMTP client for a subsequent transaction.
- By default, connection caching is enabled temporarily for destinations
+ By default, connection caching is enabled temporarily for destinations
that have a high volume of mail in the <a href="QSHAPE_README.html#active_queue">active queue</a>. Connection caching
can be enabled permanently for specific destinations.
-<b>SMTP DESTINATION SYNTAX</b>
- The Postfix SMTP+LMTP client supports multiple destinations separated
- by comma or whitespace (Postfix 3.5 and later). SMTP destinations have
- the following form:
+<b>SMTP SERVER LOOKUP</b>
+ The Postfix SMTP client supports multiple destinations separated by
+ comma or whitespace (Postfix 3.5 and later). Each destination is tried
+ in the specified order.
+
+ SMTP destinations have the following form:
<i>domainname</i>
- <i>domainname</i>:<i>port</i>
- Look up the mail exchangers for the specified domain, and con-
- nect to the specified port (default: <b>smtp</b>).
+ <i>domainname</i>:<i>service</i>
+ Look up the mail exchangers for the specified domain, and con-
+ nect to the specified service (default: <b>smtp</b>). Optionally, mail
+ exchangers may be looked up with SRV queries instead of MX; this
+ requires that <i>service</i> is given in symbolic form.
[<i>hostname</i>]
- [<i>hostname</i>]:<i>port</i>
- Look up the address(es) of the specified host, and connect to
- the specified port (default: <b>smtp</b>).
+ [<i>hostname</i>]:<i>service</i>
+ Look up the address(es) for the specified host, and connect to
+ the specified service (default: <b>smtp</b>).
[<i>address</i>]
- [<i>address</i>]:<i>port</i>
+ [<i>address</i>]:<i>service</i>
Connect to the host at the specified address, and connect to the
- specified port (default: <b>smtp</b>). An IPv6 address must be format-
- ted as [<b>ipv6</b>:<i>address</i>].
+ specified service (default: <b>smtp</b>). An IPv6 address must be for-
+ matted as [<b>ipv6</b>:<i>address</i>].
-<b>LMTP DESTINATION SYNTAX</b>
- The Postfix SMTP+LMTP client supports multiple destinations separated
- by comma or whitespace (Postfix 3.5 and later). LMTP destinations have
- the following form:
+<b>LMTP SERVER LOOKUP</b>
+ The Postfix LMTP client supports multiple destinations separated by
+ comma or whitespace (Postfix 3.5 and later). Each destination is tried
+ in the specified order.
+
+ LMTP destinations have the following form:
<b>unix</b>:<i>pathname</i>
- Connect to the local UNIX-domain server that is bound to the
- specified <i>pathname</i>. If the process runs chrooted, an absolute
+ Connect to the local UNIX-domain server that is bound to the
+ specified <i>pathname</i>. If the process runs chrooted, an absolute
pathname is interpreted relative to the Postfix queue directory.
+ <b>inet</b>:<i>domainname</i>
+
+ <b>inet</b>:<i>domainname</i>:<i>service</i>
+ Look up the LMTP servers for the specified domain and service
+ (default: <b>lmtp</b>). This form is supported when SRV lookups are
+ enabled, and requires that <i>service</i> is in symbolic form.
+
<b>inet</b>:<i>hostname</i>
- <b>inet</b>:<i>hostname</i>:<i>port</i>
+ <b>inet</b>:<i>hostname</i>:<i>service</i>
+ Look up the address(es) for the specified host, and connect to
+ the specified service (default: <b>lmtp</b>). When SRV lookups are
+ enabled, use the form <b>[</b><i>hostname</i><b>]</b> to force address lookups.
<b>inet</b>:[<i>address</i>]
- <b>inet</b>:[<i>address</i>]:<i>port</i>
- Connect to the specified TCP port on the specified local or
- remote host. If no port is specified, connect to the port
- defined as <b>lmtp</b> in <b>services</b>(4). If no such service is found,
- the <b><a href="postconf.5.html#lmtp_tcp_port">lmtp_tcp_port</a></b> configuration parameter (default value of 24)
- will be used. An IPv6 address must be formatted as
+ <b>inet</b>:[<i>address</i>]:<i>service</i>
+ Connect to the specified local or remote host and service
+ (default: <b>lmtp</b>). An IPv6 address must be formatted as
[<b>ipv6</b>:<i>address</i>].
<b>SINGLE-RECIPIENT DELIVERY</b>
@@ -136,10 +148,9 @@ SMTP(8) SMTP(8)
This feature is available as of Postfix 3.5.
<b>SECURITY</b>
- The SMTP+LMTP client is moderately security-sensitive. It
- talks to SMTP or LMTP servers and to DNS servers on the
- network. The SMTP+LMTP client can be run chrooted at fixed
- low privilege.
+ The SMTP+LMTP client is moderately security-sensitive. It talks to SMTP
+ or LMTP servers and to DNS servers on the network. The SMTP+LMTP client
+ can be run chrooted at fixed low privilege.
<b>STANDARDS</b>
<a href="https://tools.ietf.org/html/rfc821">RFC 821</a> (SMTP protocol)
@@ -180,20 +191,19 @@ SMTP(8) SMTP(8)
for all destinations that map onto the same IP address and TCP port.
<b>CONFIGURATION PARAMETERS</b>
- Before Postfix version 2.3, the LMTP client is a separate program that
- implements only a subset of the functionality available with SMTP:
- there is no support for TLS, and connections are cached in-process,
- making it ineffective when the client is used for multiple domains.
+ Postfix versions 2.3 and later implement the SMTP and LMTP client with
+ the same program, and choose the protocol and configuration parameters
+ based on the process name, <b>smtp</b> or <b>lmtp</b>.
Most smtp_<i>xxx</i> configuration parameters have an lmtp_<i>xxx</i> "mirror" param-
- eter for the equivalent LMTP feature. This document describes only
+ eter for the equivalent LMTP feature. This document describes only
those LMTP-related parameters that aren't simply "mirror" parameters.
- Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically, as <a href="smtp.8.html"><b>smtp</b>(8)</a> processes
+ Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically, as <a href="smtp.8.html"><b>smtp</b>(8)</a> processes
run for only a limited amount of time. Use the command "<b>postfix reload</b>"
to speed up a change.
- The text below provides only a parameter summary. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for
+ The text below provides only a parameter summary. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for
more details including examples.
<b>COMPATIBILITY CONTROLS</b>
@@ -214,8 +224,8 @@ SMTP(8) SMTP(8)
will send via SMTP.
<b><a href="postconf.5.html#smtp_pix_workaround_delay_time">smtp_pix_workaround_delay_time</a> (10s)</b>
- How long the Postfix SMTP client pauses before sending
- ".&lt;CR&gt;&lt;LF&gt;" in order to work around the PIX firewall
+ How long the Postfix SMTP client pauses before sending
+ ".&lt;CR&gt;&lt;LF&gt;" in order to work around the PIX firewall
"&lt;CR&gt;&lt;LF&gt;.&lt;CR&gt;&lt;LF&gt;" bug.
<b><a href="postconf.5.html#smtp_pix_workaround_threshold_time">smtp_pix_workaround_threshold_time</a> (500s)</b>
@@ -224,19 +234,19 @@ SMTP(8) SMTP(8)
delivery through firewalls with "smtp fixup" mode turned on.
<b><a href="postconf.5.html#smtp_pix_workarounds">smtp_pix_workarounds</a> (disable_esmtp, delay_dotcrlf)</b>
- A list that specifies zero or more workarounds for CISCO PIX
+ A list that specifies zero or more workarounds for CISCO PIX
firewall bugs.
<b><a href="postconf.5.html#smtp_pix_workaround_maps">smtp_pix_workaround_maps</a> (empty)</b>
- Lookup tables, indexed by the remote SMTP server address, with
+ Lookup tables, indexed by the remote SMTP server address, with
per-destination workarounds for CISCO PIX firewall bugs.
<b><a href="postconf.5.html#smtp_quote_rfc821_envelope">smtp_quote_rfc821_envelope</a> (yes)</b>
- Quote addresses in Postfix SMTP client MAIL FROM and RCPT TO
+ Quote addresses in Postfix SMTP client MAIL FROM and RCPT TO
commands as required by <a href="https://tools.ietf.org/html/rfc5321">RFC 5321</a>.
<b><a href="postconf.5.html#smtp_reply_filter">smtp_reply_filter</a> (empty)</b>
- A mechanism to transform replies from remote SMTP servers one
+ A mechanism to transform replies from remote SMTP servers one
line at a time.
<b><a href="postconf.5.html#smtp_skip_5xx_greeting">smtp_skip_5xx_greeting</a> (yes)</b>
@@ -248,68 +258,68 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.0 and earlier:
<b><a href="postconf.5.html#smtp_skip_4xx_greeting">smtp_skip_4xx_greeting</a> (yes)</b>
- Skip SMTP servers that greet with a 4XX status code (go away,
+ Skip SMTP servers that greet with a 4XX status code (go away,
try again later).
Available in Postfix version 2.2 and later:
<b><a href="postconf.5.html#smtp_discard_ehlo_keyword_address_maps">smtp_discard_ehlo_keyword_address_maps</a> (empty)</b>
- Lookup tables, indexed by the remote SMTP server address, with
- case insensitive lists of EHLO keywords (pipelining, starttls,
+ Lookup tables, indexed by the remote SMTP server address, with
+ case insensitive lists of EHLO keywords (pipelining, starttls,
auth, etc.) that the Postfix SMTP client will ignore in the EHLO
response from a remote SMTP server.
<b><a href="postconf.5.html#smtp_discard_ehlo_keywords">smtp_discard_ehlo_keywords</a> (empty)</b>
- A case insensitive list of EHLO keywords (pipelining, starttls,
+ A case insensitive list of EHLO keywords (pipelining, starttls,
auth, etc.) that the Postfix SMTP client will ignore in the EHLO
response from a remote SMTP server.
<b><a href="postconf.5.html#smtp_generic_maps">smtp_generic_maps</a> (empty)</b>
- Optional lookup tables that perform address rewriting in the
- Postfix SMTP client, typically to transform a locally valid
- address into a globally valid address when sending mail across
+ Optional lookup tables that perform address rewriting in the
+ Postfix SMTP client, typically to transform a locally valid
+ address into a globally valid address when sending mail across
the Internet.
Available in Postfix version 2.2.9 and later:
<b><a href="postconf.5.html#smtp_cname_overrides_servername">smtp_cname_overrides_servername</a> (version dependent)</b>
- When the remote SMTP servername is a DNS CNAME, replace the
- servername with the result from CNAME expansion for the purpose
- of logging, SASL password lookup, TLS policy decisions, or TLS
+ When the remote SMTP servername is a DNS CNAME, replace the
+ servername with the result from CNAME expansion for the purpose
+ of logging, SASL password lookup, TLS policy decisions, or TLS
certificate verification.
Available in Postfix version 2.3 and later:
<b><a href="postconf.5.html#lmtp_discard_lhlo_keyword_address_maps">lmtp_discard_lhlo_keyword_address_maps</a> (empty)</b>
- Lookup tables, indexed by the remote LMTP server address, with
- case insensitive lists of LHLO keywords (pipelining, starttls,
+ Lookup tables, indexed by the remote LMTP server address, with
+ case insensitive lists of LHLO keywords (pipelining, starttls,
auth, etc.) that the Postfix LMTP client will ignore in the LHLO
response from a remote LMTP server.
<b><a href="postconf.5.html#lmtp_discard_lhlo_keywords">lmtp_discard_lhlo_keywords</a> (empty)</b>
- A case insensitive list of LHLO keywords (pipelining, starttls,
+ A case insensitive list of LHLO keywords (pipelining, starttls,
auth, etc.) that the Postfix LMTP client will ignore in the LHLO
response from a remote LMTP server.
Available in Postfix version 2.4.4 and later:
<b><a href="postconf.5.html#send_cyrus_sasl_authzid">send_cyrus_sasl_authzid</a> (no)</b>
- When authenticating to a remote SMTP or LMTP server with the
- default setting "no", send no SASL authoriZation ID (authzid);
- send only the SASL authentiCation ID (authcid) plus the auth-
+ When authenticating to a remote SMTP or LMTP server with the
+ default setting "no", send no SASL authoriZation ID (authzid);
+ send only the SASL authentiCation ID (authcid) plus the auth-
cid's password.
Available in Postfix version 2.5 and later:
<b><a href="postconf.5.html#smtp_header_checks">smtp_header_checks</a> (empty)</b>
- Restricted <a href="header_checks.5.html"><b>header_checks</b>(5)</a> tables for the Postfix SMTP client.
+ Restricted <a href="header_checks.5.html"><b>header_checks</b>(5)</a> tables for the Postfix SMTP client.
<b><a href="postconf.5.html#smtp_mime_header_checks">smtp_mime_header_checks</a> (empty)</b>
- Restricted <b><a href="postconf.5.html#mime_header_checks">mime_header_checks</a></b>(5) tables for the Postfix SMTP
+ Restricted <b><a href="postconf.5.html#mime_header_checks">mime_header_checks</a></b>(5) tables for the Postfix SMTP
client.
<b><a href="postconf.5.html#smtp_nested_header_checks">smtp_nested_header_checks</a> (empty)</b>
- Restricted <b><a href="postconf.5.html#nested_header_checks">nested_header_checks</a></b>(5) tables for the Postfix SMTP
+ Restricted <b><a href="postconf.5.html#nested_header_checks">nested_header_checks</a></b>(5) tables for the Postfix SMTP
client.
<b><a href="postconf.5.html#smtp_body_checks">smtp_body_checks</a> (empty)</b>
@@ -318,7 +328,7 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.6 and later:
<b><a href="postconf.5.html#tcp_windowsize">tcp_windowsize</a> (0)</b>
- An optional workaround for routers that break TCP window scal-
+ An optional workaround for routers that break TCP window scal-
ing.
Available in Postfix version 2.8 and later:
@@ -329,16 +339,16 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.9 - 3.6:
<b><a href="postconf.5.html#smtp_per_record_deadline">smtp_per_record_deadline</a> (no)</b>
- Change the behavior of the smtp_*_timeout 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 mes-
+ Change the behavior of the smtp_*_timeout 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 mes-
sage).
Available in Postfix version 2.9 and later:
<b><a href="postconf.5.html#smtp_send_dummy_mail_auth">smtp_send_dummy_mail_auth</a> (no)</b>
- Whether or not to append the "AUTH=&lt;&gt;" option to the MAIL FROM
+ Whether or not to append the "AUTH=&lt;&gt;" option to the MAIL FROM
command in SASL-authenticated SMTP sessions.
Available in Postfix version 2.11 and later:
@@ -349,7 +359,7 @@ SMTP(8) SMTP(8)
Available in Postfix version 3.0 and later:
<b><a href="postconf.5.html#smtp_delivery_status_filter">smtp_delivery_status_filter</a> ($<a href="postconf.5.html#default_delivery_status_filter">default_delivery_status_filter</a>)</b>
- Optional filter for the <a href="smtp.8.html"><b>smtp</b>(8)</a> delivery agent to change the
+ Optional filter for the <a href="smtp.8.html"><b>smtp</b>(8)</a> delivery agent to change the
delivery status code or explanatory text of successful or unsuc-
cessful deliveries.
@@ -359,38 +369,38 @@ SMTP(8) SMTP(8)
Available in Postfix version 3.3 and later:
<b><a href="postconf.5.html#smtp_balance_inet_protocols">smtp_balance_inet_protocols</a> (yes)</b>
- When a remote destination resolves to a combination of IPv4 and
+ When a remote destination resolves to a combination of IPv4 and
IPv6 addresses, ensure that the Postfix SMTP client can try both
address types before it runs into the <a href="postconf.5.html#smtp_mx_address_limit">smtp_mx_address_limit</a>.
Available in Postfix 3.5 and later:
<b><a href="postconf.5.html#info_log_address_format">info_log_address_format</a> (external)</b>
- The email address form that will be used in non-debug logging
+ The email address form that will be used in non-debug logging
(info, warning, etc.).
Available in Postfix 3.6 and later:
<b><a href="postconf.5.html#dnssec_probe">dnssec_probe</a> (ns:.)</b>
- The DNS query type (default: "ns") and DNS query name (default:
+ The DNS query type (default: "ns") and DNS query name (default:
".") that Postfix may use to determine whether DNSSEC validation
is available.
- <b><a href="postconf.5.html#known_tcp_ports">known_tcp_ports</a> (lmtp=24, smtp=25, smtps=submissions=465, submis-</b>
+ <b><a href="postconf.5.html#known_tcp_ports">known_tcp_ports</a> (lmtp=24, smtp=25, smtps=submissions=465, submis-</b>
<b>sion=587)</b>
- Optional setting that avoids lookups in the <b>services</b>(5) data-
+ Optional setting that avoids lookups in the <b>services</b>(5) data-
base.
Available in Postfix version 3.7 and later:
<b><a href="postconf.5.html#smtp_per_request_deadline">smtp_per_request_deadline</a> (no)</b>
- Change the behavior of the smtp_*_timeout time limits, from a
- time limit per plaintext or TLS read or write call, to a com-
- bined time limit for sending a complete SMTP request and for
+ Change the behavior of the smtp_*_timeout time limits, from a
+ time limit per plaintext or TLS read or write call, to a com-
+ bined time limit for sending a complete SMTP request and for
receiving a complete SMTP response.
<b><a href="postconf.5.html#smtp_min_data_rate">smtp_min_data_rate</a> (500)</b>
- The minimum plaintext data transfer rate in bytes/second for
+ The minimum plaintext data transfer rate in bytes/second for
DATA requests, when deadlines are enabled with
<a href="postconf.5.html#smtp_per_request_deadline">smtp_per_request_deadline</a>.
@@ -400,16 +410,16 @@ SMTP(8) SMTP(8)
Available in Postfix version 3.8 and later:
<b><a href="postconf.5.html#use_srv_lookup">use_srv_lookup</a> (empty)</b>
- Enables discovery for the specified service(s) using DNS SRV
+ Enables discovery for the specified service(s) using DNS SRV
records.
<b><a href="postconf.5.html#ignore_srv_lookup_error">ignore_srv_lookup_error</a> (no)</b>
- When SRV record lookup fails, fall back to MX or IP address
+ When SRV record lookup fails, fall back to MX or IP address
lookup as if SRV record lookup was not enabled.
<b><a href="postconf.5.html#allow_srv_lookup_fallback">allow_srv_lookup_fallback</a> (no)</b>
- When SRV record lookup fails or no SRV record exists, fall back
- to MX or IP address lookup as if SRV record lookup was not
+ When SRV record lookup fails or no SRV record exists, fall back
+ to MX or IP address lookup as if SRV record lookup was not
enabled.
<b>MIME PROCESSING CONTROLS</b>
@@ -428,7 +438,7 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.1 and later:
<b><a href="postconf.5.html#smtp_send_xforward_command">smtp_send_xforward_command</a> (no)</b>
- Send the non-standard XFORWARD command when the Postfix SMTP
+ Send the non-standard XFORWARD command when the Postfix SMTP
server EHLO response announces XFORWARD support.
<b>SASL AUTHENTICATION CONTROLS</b>
@@ -436,60 +446,66 @@ SMTP(8) SMTP(8)
Enable SASL authentication in the Postfix SMTP client.
<b><a href="postconf.5.html#smtp_sasl_password_maps">smtp_sasl_password_maps</a> (empty)</b>
- Optional Postfix SMTP client lookup tables with one user-
- name:password entry per sender, remote hostname or next-hop
+ Optional Postfix SMTP client lookup tables with one user-
+ name:password entry per sender, remote hostname or next-hop
domain.
<b><a href="postconf.5.html#smtp_sasl_security_options">smtp_sasl_security_options</a> (noplaintext, noanonymous)</b>
Postfix SMTP client SASL security options; as of Postfix 2.3 the
- list of available features depends on the SASL client implemen-
+ list of available features depends on the SASL client implemen-
tation that is selected with <b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a></b>.
Available in Postfix version 2.2 and later:
<b><a href="postconf.5.html#smtp_sasl_mechanism_filter">smtp_sasl_mechanism_filter</a> (empty)</b>
- If non-empty, a Postfix SMTP client filter for the remote SMTP
+ If non-empty, a Postfix SMTP client filter for the remote SMTP
server's list of offered SASL mechanisms.
Available in Postfix version 2.3 and later:
<b><a href="postconf.5.html#smtp_sender_dependent_authentication">smtp_sender_dependent_authentication</a> (no)</b>
Enable sender-dependent authentication in the Postfix SMTP
- client; this is available only with SASL authentication, and
- disables SMTP connection caching to ensure that mail from dif-
+ client; this is available only with SASL authentication, and
+ disables SMTP connection caching to ensure that mail from dif-
ferent senders will use the appropriate credentials.
<b><a href="postconf.5.html#smtp_sasl_path">smtp_sasl_path</a> (empty)</b>
Implementation-specific information that the Postfix SMTP client
- passes through to the SASL plug-in implementation that is
+ passes through to the SASL plug-in implementation that is
selected with <b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a></b>.
<b><a href="postconf.5.html#smtp_sasl_type">smtp_sasl_type</a> (cyrus)</b>
- The SASL plug-in type that the Postfix SMTP client should use
+ The SASL plug-in type that the Postfix SMTP client should use
for authentication.
Available in Postfix version 2.5 and later:
<b><a href="postconf.5.html#smtp_sasl_auth_cache_name">smtp_sasl_auth_cache_name</a> (empty)</b>
- An optional table to prevent repeated SASL authentication fail-
- ures with the same remote SMTP server hostname, username and
+ An optional table to prevent repeated SASL authentication fail-
+ ures with the same remote SMTP server hostname, username and
password.
<b><a href="postconf.5.html#smtp_sasl_auth_cache_time">smtp_sasl_auth_cache_time</a> (90d)</b>
- The maximal age of an <a href="postconf.5.html#smtp_sasl_auth_cache_name">smtp_sasl_auth_cache_name</a> entry before it
+ The maximal age of an <a href="postconf.5.html#smtp_sasl_auth_cache_name">smtp_sasl_auth_cache_name</a> entry before it
is removed.
<b><a href="postconf.5.html#smtp_sasl_auth_soft_bounce">smtp_sasl_auth_soft_bounce</a> (yes)</b>
- When a remote SMTP server rejects a SASL authentication request
- with a 535 reply code, defer mail delivery instead of returning
+ When a remote SMTP server rejects a SASL authentication request
+ with a 535 reply code, defer mail delivery instead of returning
mail as undeliverable.
Available in Postfix version 2.9 and later:
<b><a href="postconf.5.html#smtp_send_dummy_mail_auth">smtp_send_dummy_mail_auth</a> (no)</b>
- Whether or not to append the "AUTH=&lt;&gt;" option to the MAIL FROM
+ Whether or not to append the "AUTH=&lt;&gt;" option to the MAIL FROM
command in SASL-authenticated SMTP sessions.
+ Available in Postfix version 3.9 and later:
+
+ <b><a href="postconf.5.html#smtp_sasl_password_result_delimiter">smtp_sasl_password_result_delimiter</a> (:)</b>
+ The delimiter between username and password in sasl_passwd_maps
+ lookup results.
+
<b>STARTTLS SUPPORT CONTROLS</b>
Detailed information about STARTTLS configuration may be found in the
<a href="TLS_README.html">TLS_README</a> document.
@@ -619,7 +635,7 @@ SMTP(8) SMTP(8)
Available in Postfix version 2.6 and later:
- <b><a href="postconf.5.html#smtp_tls_protocols">smtp_tls_protocols</a> (see postconf -d output)</b>
+ <b><a href="postconf.5.html#smtp_tls_protocols">smtp_tls_protocols</a> (see 'postconf -d' output)</b>
TLS protocols that the Postfix SMTP client will use with oppor-
tunistic TLS encryption.
@@ -724,6 +740,12 @@ SMTP(8) SMTP(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#smtp_tls_enable_rpk">smtp_tls_enable_rpk</a> (no)</b>
+ Request that remote SMTP servers send an <a href="https://tools.ietf.org/html/rfc7250">RFC7250</a> raw public key
+ instead of an X.509 certificate.
+
<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
@@ -954,7 +976,7 @@ SMTP(8) SMTP(8)
The local network interface addresses that this mail system
receives mail on.
- <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.
@@ -1119,5 +1141,5 @@ SMTP(8) SMTP(8)
Victor Duchovni
Morgan Stanley
- SMTP(8)
+ 8 SMTP,(LMTP)
</pre> </body> </html>