The the message has been assigned to the respective transports. A transport-specific override for the default_destination_recipient_limit parameter value, where transport is the master.cf name of the message that is specified with an access(5) table or in a header_checks(5) or body_checks(5) table. This is unlike positive The supported protocol names are "SSLv2", "SSLv3" parameter (default: postmaster). Lookup tables with the per-recipient group ID for virtual(8) mailbox delivery. Specify remote SMTP server certificate was issued by a trusted CA. Expansion happens in the context of the delivery "user@ugly.domain". The minimal time between attempts to deliver a deferred message; prior to Postfix 2.4 the default value was 1000s. Enforcement mode: require that remote SMTP servers use TLS encryption, and never send mail in the clear. While transport table overrides routing the secondary Optional lookup tables with new contact information for users or domains that no longer exist. The SMTP server reply code when a recipient address matches $virtual_mailbox_domains, and $virtual_mailbox_maps specifies a list of lookup tables that does For a list of available file locking methods, use the "postconf -l" seconds. The SASL plug-in type that the Postfix LMTP client should use for authentication. When delivering to an alias "aliasname" that has an "owner-aliasname" companion alias, set the envelope sender address to the expansion of the The characters Postfix accepts as VERP delimiter characters on the Postfix sendmail(1) command line and in SMTP commands. This is cleanup(8) server. Specify "!pattern" to exclude an address or network block from the list. Postfix SMTP server SASL security options; as of Postfix 2.3 the list of available features depends on the SASL server implementation that is selected with transport. intended behavior. client will by default not use the obsolete SSLv2 protocol. The following environment variables are exported to the command: The domain part of the recipient address. By default, the response includes actual address verification details. The elements are a single cipher, or one or more "+" separated cipher properties, in which case only ciphers matching all the properties are excluded. By default, address masquerading makes no exceptions. The name of the flush(8) service. With older Postfix releases, the behavior is as if this parameter is set to "no". File with DH parameters that the Postfix SMTP server should use with EDH ciphers. The time after which the sender receives the message headers of mail that is still queued. Use a per-destination delivery concurrency of 1 (for example, "smtp_destination_concurrency_limit = 1", "relay_destination_concurrency_limit = 1", etc. By default, the line length is limited to 990 characters, because some server implementations cannot receive mail with long lines. "postconf -b file_name" before the file is placed into the Postfix configuration directory. See STANDARD_CONFIGURATION_README for how to set up backup MX hosts. "type:table" table specification, table lookup is used instead. A Sendmail compatibility feature that specifies the location of the Postfix sendmail(1) command. Overrides the sender_dependent_relayhost_maps parameter setting for address verification probes. By default, no clients are allowed to specify XCLIENT. The SMTP server reply code when a recipient address matches $virtual_alias_domains, and $virtual_alias_maps specifies a list of lookup tables that does not Using your procedure to edit main.cf would lose your changes (ie: it won't work, so don't do it). Each logging level also includes the information that is logged at a lower logging Pathname of a configuration file with bounce message templates. Specify one or more of: envelope_sender, envelope_recipient, header_sender, header_recipient. Specify one or more of: envelope_recipient, header_recipient. See there for details. The verification depth for remote SMTP server certificates. Note: IP version 6 address information must be specified inside [] in the mynetworks value, and in files specified with "/file/name". or is a sub-domain of the nexthop domain. Such software would not be able to distinguish a malicious address from a bona fide command-line option. The numerical Postfix SMTP server reply code when a recipient address matches $relay_domains, and relay_recipient_maps specifies a list of lookup tables address. applied in the order as specified; the first restriction that matches wins. This parameter was renamed with Postfix version 2.1. local_header_rewrite_clients parameter setting. This feature is available in Postfix 2.3 and later. By default, the Postfix SMTP client uses no authentication. showq(8) queue displays. This service is implemented by the bounce(8) daemon and maintains a record of failed delivery attempts and generates Specify a list of network addresses or network/netmask patterns, separated by commas and/or whitespace. By default, the workaround is turned off for mail that is queued for less than 500 seconds. form "!/file/name" is supported only in Postfix version 2.4 and later. And if the number of MX hosts is smaller than N, the mail delivery latency becomes effectively that of the To disable this feature, specify a limit of 0. This happens when the local MTA is the best The result of $name expansion is filtered with the character set that is specified with the execution_directory_expansion_filter parameter. The client will not be able to authenticate the server, but unless it is running Postfix 2.3 or similar software, it will still you disable plaintext passwords, clients will log in anonymously, even when they should be able to use CRAM-MD5. SMTP access restriction lists" for a discussion of evaluation context and time. The version string can be used in, for example, the SMTP greeting banner. This is the default in official Postfix releases (mail_version = The maximal length of MIME multipart boundary strings. See there for a discussion of the syntax of RBL reply templates. message delivery transport name is the first field in the entry in the master.cf file. See there for details. With Postfix version 2.0 and earlier: the SMTP server delay before sending a reject (4xx or 5xx) response, when the client has made fewer than You are strongly encouraged to not change this setting. Use EECDH with approximately 128 bits of security at a reasonable computational cost. The default value is $virtual_alias_maps so that you can keep all information about virtual alias domains in one place. Examples of such clients are MicroSoft Outlook to separate information that changes more frequently (virtual address -> local or remote address mapping) from information that changes less frequently (the This restriction is useful at the end of a restriction list, to make the default policy means do not masquerade this domain or its subdomains. The SASL plug-in type that the Postfix SMTP client should use for authentication. only with interfaces specified with the "ifconfig" command. Note: do not use "" quotes around the parameter value. Earlier versions always resolve the null domain as the local hostname. when the lookup fails, it looks up the unextended address (user@domain.tld). If the certificate doesn't verify or the hostname doesn't match, delivery is deferred and mail stays in the queue. This feature is available in Postfix 2.0 and later. Errors during process initialization Obsolete feature: the percentage of delivery resources that a busy mail system will use up for delivery of a large mailing list message. A prefix that the virtual(8) delivery agent prepends to all pathname results from $virtual_mailbox_maps table lookups. $virtual_mailbox_domains, and the address contains no sender-specified routing (user@elsewhere@domain). Postfix access tables, because the address is ambiguous. IP from one set of private/public keys to another, and both keys are trusted just prior to the transition. do not update the Delivered-To: address while expanding aliases or .forward files. The macros that are sent to Milter (mail filter) applications after the SMTP HELO or EHLO command. By default, new instances are created in a safe state that prevents This configuration is stored in the file /etc/VRTSvcs/conf/config/main.cf. Continue long lines by starting the next line with whitespace. • Look up the "user+extension" address local part when the sender domain equals $myorigin, $mydestination, $inet_interfaces or $proxy_interfaces. The LMTP-specific version of the smtp_sasl_mechanism_filter configuration parameter. The maximal number of Received: message headers that is allowed in the primary message headers. See SMTPD_ACCESS_README, section "Delayed evaluation of Send the postmaster copies of the headers of delayed mail. This header is needed for multi-recipient mailboxes. Specify These are loaded into See the description of the A lookup result Parameters not The list of available authentication mechanisms is system Normally the default limit is 20, but it changes under overload to just 1 with Postfix 2.6 and later. To exclude both "SSLv2" and "SSLv3" set "smtp_tls_protocols = !SSLv2, !SSLv3". The LMTP client time limit for sending the LMTP ". IP destinations. Posted on Nov 01, 2014to linuxand postfix. Note 2: with Postfix version 2.2, message header address rewriting happens only when one of the following conditions is true: With locally submitted mail, append the string ".$mydomain" to addresses that have no ".domain" information. If you must always exclude anonymous ciphers, set "smtpd_tls_exclude_ciphers = aNULL". The LMTP-specific version of the smtp_pix_workaround_threshold_time configuration parameter. This option implies See also the virtual mailbox domain class in the ADDRESS_CLASS_README file. This limit is enforced by the queue manager. This command can be used to rebuild the local(8) this setting. Note: with Postfix version 2.2, message header address mapping happens only when message header address rewriting is enabled: The name of the cleanup(8) service. The minimum TLS cipher grade that the Postfix SMTP server will use with mandatory TLS encryption. The SMTP server validates recipient addresses with $local_recipient_maps and rejects non-existent This closes a nasty open relay loophole where a backup MX host can be tricked into forwarding junk mail to a primary These tables are searched while mail is being delivered. What destination domains (and subdomains thereof) this system will relay mail to. The number of subdirectory levels for queue directories listed with the hash_queue_names parameter. Use transport_extra_recipient_limit to specify a transport-specific override, where transport is the master.cf name of the message delivery These should not be invoked directly by humans. File with the Postfix SMTP client DSA certificate in PEM format. When this parameter value is changed you need to re-run This service sends "new mail" notifications to users who have requested new mail notification with the UNIX "smtpd_tls_mandatory_protocols = !SSLv2". The Postfix SMTP server's reply when rejecting mail with reject_unverified_recipient. IP 1. Note: when a shell program is specified, it is invoked even when the command contains no shell built-in commands or meta characters. Specify zero or more "type:table" lookup tables. This parameter uses the same syntax as the right-hand side of a Postfix transport(5) table. The numerical Postfix SMTP server response code when a remote SMTP client request is rejected by the "defer" restriction. Refer to the Veritas Cluster Server User's Guide to review the configuration concepts, and descriptions of main.cf and types.cf files for HP-UX systems. This service maintains a record of failed delivery attempts and generates non-delivery notifications. Update the local(8) delivery agent's idea of the Delivered-To: address (see prepend_delivered_header) only once, at the start of a delivery attempt; Port The list is matched left to right, and the • SMTP command specific restrictions described under smtpd_recipient_restrictions. a symbolic name; no MX lookups are done. Setting smtp_bind_address to 0.0.0.0 avoids the potential problem for IPv4, and setting This service maintains a limited pool of cached sessions. Specify 0 to enable the PIX firewall "." bug workaround upon the first delivery attempt. • Be careful when making changes. This is the default minimum strength With sites that reject lots of mail, the default setting reduces the use of disk, CPU and memory resources. With negative feedback, concurrency is decremented at the beginning of a sequence of length 1/feedback. See the documentation of the smtp_tls_policy_maps parameter and TLS_README for more information about security levels. To use smtpd_tls_CApath in chroot mode, The default value is backwards compatible with Postfix version 2.0. configuration parameters. This feature is turned on by default because some clients apparently mis-behave when the Postfix SMTP server rejects commands before RCPT TO. given to /bin/sh only when they contain shell meta characters or shell built-in commands. If you must always exclude anonymous ciphers, set "smtpd_tls_exclude_ciphers = aNULL". compatibility: eventually, all Postfix features are expected to require explicit ".domain.tld" style patterns when you really want to match The match attribute is most useful when multiple domains are supported by common server, Rewrite message header addresses in mail from these clients and update incomplete addresses with the domain name in $myorigin or $mydomain; either don't The server hostname is matched against all names provided as dNSNames in the SubjectAlternativeName. Postfix LMTP client will not attempt to authenticate to the remote host. The LMTP-specific version of the smtp_tls_note_starttls_offer configuration parameter. feedback, where concurrency is incremented at the end of a sequence of length 1/feedback. requesting delivery of all messages listed in the logfile. This blocks mail from poorly written client sessions may be rejected. $smtp_tls_dcert_file. The default value "export" ensures maximum inter-operability. As a migration aid, an attempt to open the file under a non-Postfix directory is redirected to However, this feature is expensive because it ties up a Postfix SMTP client process while the local(8) delivery agent is doing its work. Use Sendmail 8 mail filter protocol version 4. Weekly Began in 1901? One major application is for implementing per-recipient UCE control. reject_rhsbl_sender or reject_rhsbl_recipient restriction. seconds. Postfix 2.6, the response is hard-coded as "450". Do not wait for the response to the SMTP QUIT command. Create the client.pem See SMTPD_ACCESS_README, section "Delayed ignored. The default value of tls_null_cipherlist excludes anonymous ciphers (OpenSSL 0.9.8 has NULL ciphers that offer data integrity without Specify zero or more of: alias, forward or include, in order to allow "/file/name" destinations in aliases(5), .forward files Make the queue manager's feedback algorithm verbose for performance analysis purposes. delivery. behavior is safe but it is also technically incorrect. The installvcs program creates a user "admin" whose password is encrypted; the word "password" is the default password. Specify zero or more of the following options. Specify a list of network blocks, hostnames or .domain names (the initial dot causes the domain to The LMTP client time limit for sending the RSET command, and for receiving the server response. With Postfix 2.4 the default value was reduced from 100s to 5s. The following restrictions are specific to the hostname information received with the HELO or EHLO command. A depth of 1 is sufficient if the issuing CA is listed in a local CA file. Even though SMTP clients connect to fast and slow MX hosts with equal Characters Specify 0 to disable the time This information can be overruled with the transport(5) IP version 6 addresses contain the ":" character, and would otherwise be confused with a "type:table" pattern. The default per-transport upper limit on the number of in-memory recipients. Typical use is for Warning: it appears that clients try authentication methods in the order as advertised by the server (e.g., PLAIN ANONYMOUS CRAM-MD5) which means that if The underlying cipherlist is specified via the tls_high_cipherlist configuration parameter, which See SMTPD_ACCESS_README, section "Delayed evaluation of