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diff --git a/html/tlsproxy.8.html b/html/tlsproxy.8.html new file mode 100644 index 0000000..78d6814 --- /dev/null +++ b/html/tlsproxy.8.html @@ -0,0 +1,439 @@ +<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" + "http://www.w3.org/TR/html4/loose.dtd"> +<html> <head> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<title> Postfix manual - tlsproxy(8) </title> +</head> <body> <pre> +TLSPROXY(8) TLSPROXY(8) + +<b>NAME</b> + tlsproxy - Postfix TLS proxy + +<b>SYNOPSIS</b> + <b>tlsproxy</b> [generic Postfix daemon options] + +<b>DESCRIPTION</b> + The <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server implements a two-way TLS proxy. It is used by + the <a href="postscreen.8.html"><b>postscreen</b>(8)</a> server to talk SMTP-over-TLS with remote SMTP clients + that are not allowlisted (including clients whose allowlist status has + expired), and by the <a href="smtp.8.html"><b>smtp</b>(8)</a> client to support TLS connection reuse, + but it should also work for non-SMTP protocols. + + Although one <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> process can serve multiple sessions at the + same time, it is a good idea to allow the number of processes to + increase with load, so that the service remains responsive. + +<b>PROTOCOL EXAMPLE</b> + The example below concerns <a href="postscreen.8.html"><b>postscreen</b>(8)</a>. However, the <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> + server is agnostic of the application protocol, and the example is eas- + ily adapted to other applications. + + After receiving a valid remote SMTP client STARTTLS command, the + <a href="postscreen.8.html"><b>postscreen</b>(8)</a> server sends the remote SMTP client endpoint string, the + requested role (server), and the requested timeout to <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a>. + <a href="postscreen.8.html"><b>postscreen</b>(8)</a> then receives a "TLS available" indication from + <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a>. If the TLS service is available, <a href="postscreen.8.html"><b>postscreen</b>(8)</a> sends the + remote SMTP client file descriptor to <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a>, and sends the plain- + text 220 greeting to the remote SMTP client. This triggers TLS negoti- + ations between the remote SMTP client and <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a>. Upon completion + of the TLS-level handshake, <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> translates between plaintext + from/to <a href="postscreen.8.html"><b>postscreen</b>(8)</a> and ciphertext to/from the remote SMTP client. + +<b>SECURITY</b> + The <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server is moderately security-sensitive. It talks to + untrusted clients on the network. The process can be run chrooted at + fixed low privilege. + +<b>DIAGNOSTICS</b> + Problems and transactions are logged to <b>syslogd</b>(8) or <a href="postlogd.8.html"><b>postlogd</b>(8)</a>. + +<b>CONFIGURATION PARAMETERS</b> + Changes to <a href="postconf.5.html"><b>main.cf</b></a> are not picked up automatically, as <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> pro- + cesses may run for a long time depending on mail server load. 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 + more details including examples. + +<b>STARTTLS GLOBAL CONTROLS</b> + The following settings are global and therefore cannot be overruled by + information specified in a <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client request. + + <b><a href="postconf.5.html#tls_append_default_CA">tls_append_default_CA</a> (no)</b> + Append the system-supplied default Certification Authority cer- + tificates to the ones specified with *_tls_CApath or + *_tls_CAfile. + + <b><a href="postconf.5.html#tls_daemon_random_bytes">tls_daemon_random_bytes</a> (32)</b> + The number of pseudo-random bytes that an <a href="smtp.8.html"><b>smtp</b>(8)</a> or <a href="smtpd.8.html"><b>smtpd</b>(8)</a> + process requests from the <a href="tlsmgr.8.html"><b>tlsmgr</b>(8)</a> server in order to seed its + internal pseudo random number generator (PRNG). + + <b><a href="postconf.5.html#tls_high_cipherlist">tls_high_cipherlist</a> (see 'postconf -d' output)</b> + The OpenSSL cipherlist for "high" grade ciphers. + + <b><a href="postconf.5.html#tls_medium_cipherlist">tls_medium_cipherlist</a> (see 'postconf -d' output)</b> + The OpenSSL cipherlist for "medium" or higher grade ciphers. + + <b><a href="postconf.5.html#tls_low_cipherlist">tls_low_cipherlist</a> (see 'postconf -d' output)</b> + The OpenSSL cipherlist for "low" or higher grade ciphers. + + <b><a href="postconf.5.html#tls_export_cipherlist">tls_export_cipherlist</a> (see 'postconf -d' output)</b> + The OpenSSL cipherlist for "export" or higher grade ciphers. + + <b><a href="postconf.5.html#tls_null_cipherlist">tls_null_cipherlist</a> (eNULL:!aNULL)</b> + The OpenSSL cipherlist for "NULL" grade ciphers that provide + authentication without encryption. + + <b><a href="postconf.5.html#tls_eecdh_strong_curve">tls_eecdh_strong_curve</a> (prime256v1)</b> + The elliptic curve used by the Postfix SMTP server for sensibly + strong ephemeral ECDH key exchange. + + <b><a href="postconf.5.html#tls_eecdh_ultra_curve">tls_eecdh_ultra_curve</a> (secp384r1)</b> + The elliptic curve used by the Postfix SMTP server for maximally + strong ephemeral ECDH key exchange. + + <b><a href="postconf.5.html#tls_disable_workarounds">tls_disable_workarounds</a> (see 'postconf -d' output)</b> + List or bit-mask of OpenSSL bug work-arounds to disable. + + <b><a href="postconf.5.html#tls_preempt_cipherlist">tls_preempt_cipherlist</a> (no)</b> + With SSLv3 and later, use the Postfix SMTP server's cipher pref- + erence order instead of the remote client's cipher preference + order. + + Available in Postfix version 2.9 and later: + + <b><a href="postconf.5.html#tls_legacy_public_key_fingerprints">tls_legacy_public_key_fingerprints</a> (no)</b> + A temporary migration aid for sites that use certificate <i>pub-</i> + <i>lic-key</i> fingerprints with Postfix 2.9.0..2.9.5, which use an + incorrect algorithm. + + Available in Postfix version 2.11-3.1: + + <b><a href="postconf.5.html#tls_dane_digest_agility">tls_dane_digest_agility</a> (on)</b> + Configure <a href="https://tools.ietf.org/html/rfc7671">RFC7671</a> DANE TLSA digest algorithm agility. + + <b><a href="postconf.5.html#tls_dane_trust_anchor_digest_enable">tls_dane_trust_anchor_digest_enable</a> (yes)</b> + Enable support for <a href="https://tools.ietf.org/html/rfc6698">RFC 6698</a> (DANE TLSA) DNS records that contain + digests of trust-anchors with certificate usage "2". + + Available in Postfix version 2.11 and later: + + <b><a href="postconf.5.html#tlsmgr_service_name">tlsmgr_service_name</a> (tlsmgr)</b> + The name of the <a href="tlsmgr.8.html"><b>tlsmgr</b>(8)</a> service entry in <a href="master.5.html">master.cf</a>. + + Available in Postfix version 3.0 and later: + + <b><a href="postconf.5.html#tls_session_ticket_cipher">tls_session_ticket_cipher</a> (Postfix</b> ><b>= 3.0: aes-256-cbc, Postfix</b> < <b>3.0:</b> + <b>aes-128-cbc)</b> + Algorithm used to encrypt <a href="https://tools.ietf.org/html/rfc5077">RFC5077</a> TLS session tickets. + + <b><a href="postconf.5.html#openssl_path">openssl_path</a> (openssl)</b> + The location of the OpenSSL command line program <b>openssl</b>(1). + + Available in Postfix version 3.2 and later: + + <b><a href="postconf.5.html#tls_eecdh_auto_curves">tls_eecdh_auto_curves</a> (see 'postconf -d' output)</b> + The prioritized list of elliptic curves supported by the Postfix + SMTP client and server. + + Available in Postfix version 3.4 and later: + + <b><a href="postconf.5.html#tls_server_sni_maps">tls_server_sni_maps</a> (empty)</b> + Optional lookup tables that map names received from remote SMTP + clients via the TLS Server Name Indication (SNI) extension to + the appropriate keys and certificate chains. + + Available in Postfix 3.5, 3.4.6, 3.3.5, 3.2.10, 3.1.13 and later: + + <b><a href="postconf.5.html#tls_fast_shutdown_enable">tls_fast_shutdown_enable</a> (yes)</b> + A workaround for implementations that hang Postfix while shut- + ting down a TLS session, until Postfix times out. + + 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#tls_config_file">tls_config_file</a> (default)</b> + Optional configuration file with baseline OpenSSL settings. + + <b><a href="postconf.5.html#tls_config_name">tls_config_name</a> (empty)</b> + The application name passed by Postfix to OpenSSL library ini- + tialization functions. + +<b>STARTTLS SERVER CONTROLS</b> + These settings are clones of Postfix SMTP server settings. They allow + <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> to load the same certificate and private key information as + the Postfix SMTP server, before dropping privileges, so that the key + files can be kept read-only for root. These settings can currently not + be overruled by information in a <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client request, but that + limitation may be removed in a future version. + + <b><a href="postconf.5.html#tlsproxy_tls_CAfile">tlsproxy_tls_CAfile</a> ($<a href="postconf.5.html#smtpd_tls_CAfile">smtpd_tls_CAfile</a>)</b> + A file containing (PEM format) CA certificates of root CAs + trusted to sign either remote SMTP client certificates or inter- + mediate CA certificates. + + <b><a href="postconf.5.html#tlsproxy_tls_CApath">tlsproxy_tls_CApath</a> ($<a href="postconf.5.html#smtpd_tls_CApath">smtpd_tls_CApath</a>)</b> + A directory containing (PEM format) CA certificates of root CAs + trusted to sign either remote SMTP client certificates or inter- + mediate CA certificates. + + <b><a href="postconf.5.html#tlsproxy_tls_always_issue_session_ids">tlsproxy_tls_always_issue_session_ids</a> ($<a href="postconf.5.html#smtpd_tls_always_issue_session_ids">smtpd_tls_always_issue_ses</a>-</b> + <b><a href="postconf.5.html#smtpd_tls_always_issue_session_ids">sion_ids</a>)</b> + Force the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server to issue a TLS session id, + even when TLS session caching is turned off. + + <b><a href="postconf.5.html#tlsproxy_tls_ask_ccert">tlsproxy_tls_ask_ccert</a> ($<a href="postconf.5.html#smtpd_tls_ask_ccert">smtpd_tls_ask_ccert</a>)</b> + Ask a remote SMTP client for a client certificate. + + <b><a href="postconf.5.html#tlsproxy_tls_ccert_verifydepth">tlsproxy_tls_ccert_verifydepth</a> ($<a href="postconf.5.html#smtpd_tls_ccert_verifydepth">smtpd_tls_ccert_verifydepth</a>)</b> + The verification depth for remote SMTP client certificates. + + <b><a href="postconf.5.html#tlsproxy_tls_cert_file">tlsproxy_tls_cert_file</a> ($<a href="postconf.5.html#smtpd_tls_cert_file">smtpd_tls_cert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server RSA certificate in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_tls_ciphers">tlsproxy_tls_ciphers</a> ($<a href="postconf.5.html#smtpd_tls_ciphers">smtpd_tls_ciphers</a>)</b> + The minimum TLS cipher grade that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server + will use with opportunistic TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_tls_dcert_file">tlsproxy_tls_dcert_file</a> ($<a href="postconf.5.html#smtpd_tls_dcert_file">smtpd_tls_dcert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server DSA certificate in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_tls_dh1024_param_file">tlsproxy_tls_dh1024_param_file</a> ($<a href="postconf.5.html#smtpd_tls_dh1024_param_file">smtpd_tls_dh1024_param_file</a>)</b> + File with DH parameters that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server + should use with non-export EDH ciphers. + + <b><a href="postconf.5.html#tlsproxy_tls_dh512_param_file">tlsproxy_tls_dh512_param_file</a> ($<a href="postconf.5.html#smtpd_tls_dh512_param_file">smtpd_tls_dh512_param_file</a>)</b> + File with DH parameters that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server + should use with export-grade EDH ciphers. + + <b><a href="postconf.5.html#tlsproxy_tls_dkey_file">tlsproxy_tls_dkey_file</a> ($<a href="postconf.5.html#smtpd_tls_dkey_file">smtpd_tls_dkey_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server DSA private key in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_tls_eccert_file">tlsproxy_tls_eccert_file</a> ($<a href="postconf.5.html#smtpd_tls_eccert_file">smtpd_tls_eccert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server ECDSA certificate in + PEM format. + + <b><a href="postconf.5.html#tlsproxy_tls_eckey_file">tlsproxy_tls_eckey_file</a> ($<a href="postconf.5.html#smtpd_tls_eckey_file">smtpd_tls_eckey_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server ECDSA private key in + PEM format. + + <b><a href="postconf.5.html#tlsproxy_tls_eecdh_grade">tlsproxy_tls_eecdh_grade</a> ($<a href="postconf.5.html#smtpd_tls_eecdh_grade">smtpd_tls_eecdh_grade</a>)</b> + The Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server security grade for ephemeral + elliptic-curve Diffie-Hellman (EECDH) key exchange. + + <b><a href="postconf.5.html#tlsproxy_tls_exclude_ciphers">tlsproxy_tls_exclude_ciphers</a> ($<a href="postconf.5.html#smtpd_tls_exclude_ciphers">smtpd_tls_exclude_ciphers</a>)</b> + List of ciphers or cipher types to exclude from the <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> + server cipher list at all TLS security levels. + + <b><a href="postconf.5.html#tlsproxy_tls_fingerprint_digest">tlsproxy_tls_fingerprint_digest</a> ($<a href="postconf.5.html#smtpd_tls_fingerprint_digest">smtpd_tls_fingerprint_digest</a>)</b> + The message digest algorithm to construct remote SMTP + client-certificate fingerprints. + + <b><a href="postconf.5.html#tlsproxy_tls_key_file">tlsproxy_tls_key_file</a> ($<a href="postconf.5.html#smtpd_tls_key_file">smtpd_tls_key_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server RSA private key in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_tls_loglevel">tlsproxy_tls_loglevel</a> ($<a href="postconf.5.html#smtpd_tls_loglevel">smtpd_tls_loglevel</a>)</b> + Enable additional Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server logging of TLS + activity. + + <b><a href="postconf.5.html#tlsproxy_tls_mandatory_ciphers">tlsproxy_tls_mandatory_ciphers</a> ($<a href="postconf.5.html#smtpd_tls_mandatory_ciphers">smtpd_tls_mandatory_ciphers</a>)</b> + The minimum TLS cipher grade that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server + will use with mandatory TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_tls_mandatory_exclude_ciphers">tlsproxy_tls_mandatory_exclude_ciphers</a> ($<a href="postconf.5.html#smtpd_tls_mandatory_exclude_ciphers">smtpd_tls_manda</a>-</b> + <b><a href="postconf.5.html#smtpd_tls_mandatory_exclude_ciphers">tory_exclude_ciphers</a>)</b> + Additional list of ciphers or cipher types to exclude from the + <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server cipher list at mandatory TLS security levels. + + <b><a href="postconf.5.html#tlsproxy_tls_mandatory_protocols">tlsproxy_tls_mandatory_protocols</a> ($<a href="postconf.5.html#smtpd_tls_mandatory_protocols">smtpd_tls_mandatory_protocols</a>)</b> + The SSL/TLS protocols accepted by the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server + with mandatory TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_tls_protocols">tlsproxy_tls_protocols</a> ($<a href="postconf.5.html#smtpd_tls_protocols">smtpd_tls_protocols</a>)</b> + List of TLS protocols that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server will + exclude or include with opportunistic TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_tls_req_ccert">tlsproxy_tls_req_ccert</a> ($<a href="postconf.5.html#smtpd_tls_req_ccert">smtpd_tls_req_ccert</a>)</b> + With mandatory TLS encryption, require a trusted remote SMTP + client certificate in order to allow TLS connections to proceed. + + <b><a href="postconf.5.html#tlsproxy_tls_security_level">tlsproxy_tls_security_level</a> ($<a href="postconf.5.html#smtpd_tls_security_level">smtpd_tls_security_level</a>)</b> + The SMTP TLS security level for the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server; + when a non-empty value is specified, this overrides the obsolete + parameters <a href="postconf.5.html#smtpd_use_tls">smtpd_use_tls</a> and <a href="postconf.5.html#smtpd_enforce_tls">smtpd_enforce_tls</a>. + + <b><a href="postconf.5.html#tlsproxy_tls_chain_files">tlsproxy_tls_chain_files</a> ($<a href="postconf.5.html#smtpd_tls_chain_files">smtpd_tls_chain_files</a>)</b> + Files with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> server keys and certificate + chains in PEM format. + +<b>STARTTLS CLIENT CONTROLS</b> + These settings are clones of Postfix SMTP client settings. They allow + <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> to load the same certificate and private key information as + the Postfix SMTP client, before dropping privileges, so that the key + files can be kept read-only for root. Some settings may be overruled by + information in a <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client request. + + Available in Postfix version 3.4 and later: + + <b><a href="postconf.5.html#tlsproxy_client_CAfile">tlsproxy_client_CAfile</a> ($<a href="postconf.5.html#smtp_tls_CAfile">smtp_tls_CAfile</a>)</b> + A file containing CA certificates of root CAs trusted to sign + either remote TLS server certificates or intermediate CA cer- + tificates. + + <b><a href="postconf.5.html#tlsproxy_client_CApath">tlsproxy_client_CApath</a> ($<a href="postconf.5.html#smtp_tls_CApath">smtp_tls_CApath</a>)</b> + Directory with PEM format Certification Authority certificates + that the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client uses to verify a remote TLS + server certificate. + + <b><a href="postconf.5.html#tlsproxy_client_chain_files">tlsproxy_client_chain_files</a> ($<a href="postconf.5.html#smtp_tls_chain_files">smtp_tls_chain_files</a>)</b> + Files with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client keys and certificate + chains in PEM format. + + <b><a href="postconf.5.html#tlsproxy_client_cert_file">tlsproxy_client_cert_file</a> ($<a href="postconf.5.html#smtp_tls_cert_file">smtp_tls_cert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client RSA certificate in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_client_key_file">tlsproxy_client_key_file</a> ($<a href="postconf.5.html#smtp_tls_key_file">smtp_tls_key_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client RSA private key in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_client_dcert_file">tlsproxy_client_dcert_file</a> ($<a href="postconf.5.html#smtp_tls_dcert_file">smtp_tls_dcert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client DSA certificate in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_client_dkey_file">tlsproxy_client_dkey_file</a> ($<a href="postconf.5.html#smtp_tls_dkey_file">smtp_tls_dkey_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client DSA private key in PEM + format. + + <b><a href="postconf.5.html#tlsproxy_client_eccert_file">tlsproxy_client_eccert_file</a> ($<a href="postconf.5.html#smtp_tls_eccert_file">smtp_tls_eccert_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client ECDSA certificate in + PEM format. + + <b><a href="postconf.5.html#tlsproxy_client_eckey_file">tlsproxy_client_eckey_file</a> ($<a href="postconf.5.html#smtp_tls_eckey_file">smtp_tls_eckey_file</a>)</b> + File with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client ECDSA private key in + PEM format. + + <b><a href="postconf.5.html#tlsproxy_client_fingerprint_digest">tlsproxy_client_fingerprint_digest</a> ($<a href="postconf.5.html#smtp_tls_fingerprint_digest">smtp_tls_fingerprint_digest</a>)</b> + The message digest algorithm used to construct remote TLS server + certificate fingerprints. + + <b><a href="postconf.5.html#tlsproxy_client_loglevel">tlsproxy_client_loglevel</a> ($<a href="postconf.5.html#smtp_tls_loglevel">smtp_tls_loglevel</a>)</b> + Enable additional Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client logging of TLS + activity. + + <b><a href="postconf.5.html#tlsproxy_client_loglevel_parameter">tlsproxy_client_loglevel_parameter</a> (<a href="postconf.5.html#smtp_tls_loglevel">smtp_tls_loglevel</a>)</b> + The name of the parameter that provides the + <a href="postconf.5.html#tlsproxy_client_loglevel">tlsproxy_client_loglevel</a> value. + + <b><a href="postconf.5.html#tlsproxy_client_scert_verifydepth">tlsproxy_client_scert_verifydepth</a> ($<a href="postconf.5.html#smtp_tls_scert_verifydepth">smtp_tls_scert_verifydepth</a>)</b> + The verification depth for remote TLS server certificates. + + <b><a href="postconf.5.html#tlsproxy_client_use_tls">tlsproxy_client_use_tls</a> ($<a href="postconf.5.html#smtp_use_tls">smtp_use_tls</a>)</b> + Opportunistic mode: use TLS when a remote server announces TLS + support. + + <b><a href="postconf.5.html#tlsproxy_client_enforce_tls">tlsproxy_client_enforce_tls</a> ($<a href="postconf.5.html#smtp_enforce_tls">smtp_enforce_tls</a>)</b> + Enforcement mode: require that SMTP servers use TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_client_per_site">tlsproxy_client_per_site</a> ($<a href="postconf.5.html#smtp_tls_per_site">smtp_tls_per_site</a>)</b> + Optional lookup tables with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client TLS + usage policy by next-hop destination and by remote TLS server + hostname. + + Available in Postfix version 3.4-3.6: + + <b><a href="postconf.5.html#tlsproxy_client_level">tlsproxy_client_level</a> ($<a href="postconf.5.html#smtp_tls_security_level">smtp_tls_security_level</a>)</b> + The default TLS security level for the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> + client. + + <b><a href="postconf.5.html#tlsproxy_client_policy">tlsproxy_client_policy</a> ($<a href="postconf.5.html#smtp_tls_policy_maps">smtp_tls_policy_maps</a>)</b> + Optional lookup tables with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client TLS + security policy by next-hop destination. + + Available in Postfix version 3.7 and later: + + <b><a href="postconf.5.html#tlsproxy_client_security_level">tlsproxy_client_security_level</a> ($<a href="postconf.5.html#smtp_tls_security_level">smtp_tls_security_level</a>)</b> + The default TLS security level for the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> + client. + + <b><a href="postconf.5.html#tlsproxy_client_policy_maps">tlsproxy_client_policy_maps</a> ($<a href="postconf.5.html#smtp_tls_policy_maps">smtp_tls_policy_maps</a>)</b> + Optional lookup tables with the Postfix <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> client TLS + security policy by next-hop destination. + +<b>OBSOLETE STARTTLS SUPPORT CONTROLS</b> + These parameters are supported for compatibility with <a href="smtpd.8.html"><b>smtpd</b>(8)</a> legacy + parameters. + + <b><a href="postconf.5.html#tlsproxy_use_tls">tlsproxy_use_tls</a> ($<a href="postconf.5.html#smtpd_use_tls">smtpd_use_tls</a>)</b> + Opportunistic TLS: announce STARTTLS support to remote SMTP + clients, but do not require that clients use TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_enforce_tls">tlsproxy_enforce_tls</a> ($<a href="postconf.5.html#smtpd_enforce_tls">smtpd_enforce_tls</a>)</b> + Mandatory TLS: announce STARTTLS support to remote SMTP clients, + and require that clients use TLS encryption. + + <b><a href="postconf.5.html#tlsproxy_client_use_tls">tlsproxy_client_use_tls</a> ($<a href="postconf.5.html#smtp_use_tls">smtp_use_tls</a>)</b> + Opportunistic mode: use TLS when a remote server announces TLS + support. + + <b><a href="postconf.5.html#tlsproxy_client_enforce_tls">tlsproxy_client_enforce_tls</a> ($<a href="postconf.5.html#smtp_enforce_tls">smtp_enforce_tls</a>)</b> + Enforcement mode: require that SMTP servers use TLS encryption. + +<b>RESOURCE CONTROLS</b> + <b><a href="postconf.5.html#tlsproxy_watchdog_timeout">tlsproxy_watchdog_timeout</a> (10s)</b> + How much time a <a href="tlsproxy.8.html"><b>tlsproxy</b>(8)</a> process may take to process local or + remote I/O before it is terminated by a built-in watchdog timer. + +<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- + figuration files. + + <b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b> + The process ID of a Postfix command or daemon process. + + <b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b> + The process name of a Postfix command or daemon process. + + <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 + records, so that, for example, "smtpd" becomes "prefix/smtpd". + + Available in Postfix 3.3 and later: + + <b><a href="postconf.5.html#service_name">service_name</a> (read-only)</b> + The <a href="master.5.html">master.cf</a> service name of a Postfix daemon process. + +<b>SEE ALSO</b> + <a href="postscreen.8.html">postscreen(8)</a>, Postfix zombie blocker + <a href="smtpd.8.html">smtpd(8)</a>, Postfix SMTP server + <a href="postconf.5.html">postconf(5)</a>, configuration parameters + <a href="postlogd.8.html">postlogd(8)</a>, Postfix logging + syslogd(8), system logging + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>HISTORY</b> + This service was introduced with Postfix version 2.8. + +<b>AUTHOR(S)</b> + Wietse Venema + IBM T.J. Watson Research + P.O. Box 704 + Yorktown Heights, NY 10598, USA + + Wietse Venema + Google, Inc. + 111 8th Avenue + New York, NY 10011, USA + + TLSPROXY(8) +</pre> </body> </html> |