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Postfix Configuration - UCE Controls
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Postfix manual - access(5)
ACCEPT ACTIONS
OK Accept the address etc. that matches the pattern.
all-numerical
An all-numerical result is treated as OK. This for-
mat is generated by address-based relay authoriza-
tion schemes such as pop-before-smtp.
REJECT ACTIONS
Postfix version 2.3 and later support enhanced status
codes as defined in
RFC 3463. When no code is specified
at the beginning of the
text below, Postfix inserts a
default enhanced status code of "5.7.1" in the case of
reject actions, and "4.7.1" in the case of defer actions.
See "ENHANCED STATUS CODES" below.
4NN text
5NN text
Reject the address etc. that matches the pattern,
and respond with the numerical three-digit code and
text.
4NN means "try again later", while
5NN means
"do not try again".
The reply code "421" causes Postfix to disconnect
immediately (Postfix version 2.3 and later).
REJECT optional text...
Reject the address etc. that matches the pattern.
Reply with
$reject_code optional text... when the
optional text is specified, otherwise reply with a
generic error response message.
DEFER_IF_REJECT optional text...
Defer the request if some later restriction would
result in a REJECT action. Reply with "
450 4.7.1
optional text... when the optional text is speci-
fied, otherwise reply with a generic error response
message.
This feature is available in Postfix 2.1 and later.
DEFER_IF_PERMIT optional text...
Defer the request if some later restriction would
result in a an explicit or implicit PERMIT action.
Reply with "
450 4.7.1 optional text... when the
optional text is specified, otherwise reply with a
generic error response message.
This feature is available in Postfix 2.1 and later.
OTHER ACTIONS
restriction...
Apply the named UCE restriction(s) (
permit,
reject,
reject_unauth_destination, and so on).
BCC user@domain
Send one copy of the message to the specified
recipient.
If multiple BCC actions are specified within the
same SMTP MAIL transaction, only the last action
will be used.
This feature is not part of the stable Postfix
release.
DISCARD optional text...
Claim successful delivery and silently discard the
message. Log the optional text if specified, oth-
erwise log a generic message.
Note: this action currently affects all recipients
of the message. To discard only one recipient
without discarding the entire message, use the
transport(5) table to direct mail to the
discard(8)
service.
This feature is available in Postfix 2.0 and later.
DUNNO Pretend that the lookup key was not found. This
prevents Postfix from trying substrings of the
lookup key (such as a subdomain name, or a network
address subnetwork).
This feature is available in Postfix 2.0 and later.
FILTER transport:destination
After the message is queued, send the entire mes-
sage through the specified external content filter.
The
transport:destination syntax is described in
the
transport(5) manual page. More information
about external content filters is in the Postfix
FILTER_README file.
Note: this action overrides the
content_filter set-
ting, and currently affects all recipients of the
message.
This feature is available in Postfix 2.0 and later.
HOLD optional text...
Place the message on the
hold queue, where it will
sit until someone either deletes it or releases it
for delivery. Log the optional text if specified,
otherwise log a generic message.
Mail that is placed on hold can be examined with
the
postcat(1) command, and can be destroyed or
released with the
postsuper(1) command.
Note: use "
postsuper -r" to release mail that was
kept on hold for a significant fraction of
$maxi-
mal_queue_lifetime or
$bounce_queue_lifetime, or
longer. Use "
postsuper -H" only for mail that will
not expire within a few delivery attempts.
Note: this action currently affects all recipients
of the message.
This feature is available in Postfix 2.0 and later.
PREPEND headername: headervalue
Prepend the specified message header to the mes-
sage. When more than one PREPEND action executes,
the first prepended header appears before the sec-
ond etc. prepended header.
Note: this action must execute before the message
content is received; it cannot execute in the con-
text of
smtpd_end_of_data_restrictions.
This feature is available in Postfix 2.1 and later.
REDIRECT user@domain
After the message is queued, send the message to
the specified address instead of the intended
recipient(s).
Note: this action overrides the FILTER action, and
currently affects all recipients of the message.
This feature is available in Postfix 2.1 and later.
WARN optional text...
Log a warning with the optional text, together with
client information and if available, with helo,
sender, recipient and protocol information.
This feature is available in Postfix 2.1 and later.
Be cool
