Add hardware freak's pcre spam blocker in zimbra

Add hardware freak's pcre spam blocker in zimbra

   KB 22603        Last updated on 04/21/2016  




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Purpose

It is updated frequently and allows the ability to reject at the smtpd layer known spammers.

Resolution

zmprov mcf +zimbraMtaRestriction 'check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre'

Now you need to restart the MTA

zimbra@zqa-397:~$ zmmtactl reload
zimbra@zqa-397:~$ zmprov gcf zimbraMtaRestriction
zimbraMtaRestriction: reject_invalid_helo_hostname
zimbraMtaRestriction: reject_non_fqdn_sender
zimbraMtaRestriction: check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre
zimbra@zqa-397:~$ zmprov gs `zmhostname` zimbraMtaRestriction
# name testserver.raun.com
zimbraMtaRestriction: reject_invalid_helo_hostname
zimbraMtaRestriction: reject_non_fqdn_sender
zimbraMtaRestriction: check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre
zimbra@zqa-397:~$ grep -i -r fqrdns.pcre /opt/zimbra/postfix/*
/opt/zimbra/postfix/conf/main.cf:smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unlisted_recipient, reject_invalid_helo_hostname, reject_non_fqdn_sender, check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre, permit
zimbra@zqa-397:~$ postconf -n | egrep restrictions | grep fqrdns    
smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unlisted_recipient, reject_invalid_helo_hostname, reject_non_fqdn_sender, check_reverse_client_hostname_access pcre:/opt/zimbra/conf/fqrdns.pcre, permit

Additional Content

No additional content.

Verified Against: Zimbra Collaboration 8.6, 8.5 Date Created: 08/27/2015
Article ID: https://wiki.zimbra.com/index.php?title=Add_hardware_freak%27s_pcre_spam_blocker_in_zimbra Date Modified: 04/21/2016



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Wiki/KB reviewed by SME1 SME2 Copy Editor Last edit by Jorge de la Cruz
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