Greylisting with postgrey
First installation. It's simple
yum install postgrey
Turn on automatic start:
chkconfig postgrey on
Check:
chkconfig --list postgrey postgrey 0:off 1:off 2:on 3:on 4:on 5:on 6:off
Add
, check_policy_service unix:/var/spool/postfix/postgrey/socket
in main.cf file as last element smtpd_recipient_restrictions option:
Now it looks like this:
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, reject_unknown_recipient_domain, check_policy_service unix:/var/spool/postfix/postgrey/socket
Restart postfix. Done.
You can check in maillog if it works:
grep postgrey /var/log/maillog
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