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See man 1 policyd-spf for additional documentation.
Installing
----------
This package must be integrated with Postfix to be effective:
1. Add the following to /etc/postfix/master.cf:
policyd-spf unix - n n - 0 spawn
user=policyd-spf argv=/usr/bin/policyd-spf
2. Configure the Postfix policy service in /etc/postfix/main.cf:
smtpd_recipient_restrictions =
...
reject_unauth_destination
check_policy_service unix:private/policyd-spf
...
policyd-spf_time_limit = 3600
NOTE: Specify check_policy_service AFTER reject_unauth_destination or
else your system can become an open relay.
3. Reload Postfix.
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