Postfix Overview - Introduction - SCN Research

Postfix Configuration - UCE Controls
permit
reject
reject_unauth_pipelining
See generic restrictions.
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Generic restrictions
The following restrictions can use used for client hostnames or addresses, for HELO (EHLO) hostnames, for
sender mail addresses and for recipient mail addresses.
Restrictions:
permit
Permit the request. This restriction is useful at the end of a restriction list, to make the default
policy explicit.
reject
Reject the request. This restriction is useful at the end of a restriction list, to make the default
policy explicit. The reject_code configuration parameter specifies the response code to rejected
requests (default: 554).
reject_unauth_pipelining
Reject the request when the client sends SMTP commands ahead of time without knowing
that Postfix actually supports SMTP command pipelining. This stops mail from bulk mail software
that improperly uses SMTP command pipelining to speed up deliveries.
Additional UCE control parameters
maps_rbl_domains
This parameter controls the behavior of the reject_maps_rbl restriction that can appear as part of a
client hostname/address restriction list.
Default:
maps_rbl_domains = blackholes.mail-abuse.org
Note: RBL lookups are disabled by default.
Syntax:
Zero or more DNS domains that blacklist client IP addresses. A host is blacklisted when its
reversed IP address is listed as a subdomain under any of the domains listed in
$maps_rbl_domains.
relay_domains
This parameter controls the behavior of the check_relay_domains, reject_unauth_destination and
permit_auth_destination restrictions that can appear as part of a recipient address restriction list.
Default:
relay_domains = $mydestination
By default, the Postfix SMTP server relays mail:
http://www.porcupine.org/postfix-mirror/uce.html
6/26/01