python-policyd-spf - pure-Python Postfix policy daemon for SPF checking
This documentation assumes you have read Postfix’s README_FILES/
SMTPD_POLICY_README and are generally familiar with Sender Policy
Framework (SPF). See RFC 4408 for details.
man 1 policyd-spf provides general operation documentation for this
See man 5 policyd-spf.conf for configuration file information.
python-policyd-spf operates with a default installed configuration file
and set of default configuration options that are used if the
configuration file cannot be found. These options can be changed by
changing the installed configuration files or through giving a path to
an alternate configuration file.
Additionally, different configurations can be provided on a per user
basis. This man page describes setup and user of per user (mail
recipient) configurations. Currently these configurations can either
be stored in a text file or a Berkeley DB (libdb) datase. If there is
sufficient interest, other data storage methods may be supported in the
Use of per-user configuration is defined in the application
configuration file with the setting "Per_User". The value of the
setting gives the type and location of the per-user configuration
information. Currently supported types are text and bsddb. User is
defined an email address of a recipient of the message.
All options available at the application level (See man 5 policyd-
spf.conf) can be adjusted on a per-user basis. Per-user checks can
only be done as part of smtpd_recipient_restrictions. Per-user actions
are not possible at other stages of the SMTP dialogue. The user is not
yet known for smtpd_client_restrictions, smtpd_helo_restrictions, or
smtpd_sender_restrictions. If used during smtpd_data_restrictions or
smtpd_end_of_data_restrictions, the entire message will be available
only if the message was only to a single recipient. If per-user
configurations are used when recipient information is not available,
warnings will be logged and the per-user information will be ignored.
In addition to specifying individual users, regular expression matching
is also available, but may have performance implications since the
entire user table has to be traversed for each message recipient.
Text Per-User Configuration File
The text file option is useful for testing and when only a small number
of users require per-user configurations. It is specified in the main
"Per_User = text,/etc/pypolicyd-spf/userconf"
Lines beginning with "#" are treated as comments and ignored. The
location of the file is determined by the system administrator. No
default file is provided in or installed by the package.
The configuration of the file is a comma separated combination of user
and configuration information, with one line per user’s configuration
information (NOTE: due to man page formating requirements, these lines
are wrapped - in the config file, it must be one line per user):
It is not necessary to specify all configuration parameters for each
user, only those that are different than the overall configuration need
to be specified.
man 1 policyd-spf, man 5 policyd-spf.conf, python-spf,
<http://www.openspf.org>, RFC 4408
This version of pypolicyd-spf was written by Copyright © 2007,
2008,2009,2010 Scott Kitterman <email@example.com>. It is derived
from Tumgreyspf, written by Sean Reifschneider, tummy.com, ltd
This man-page was created by Scott Kitterman <firstname.lastname@example.org>.