Relay per Domain

Revision as of 02:42, 5 June 2009 by Irfan (talk | contribs)

Reference bug:

Zimbra allows relaying emails to a specific server only, i.e using zimbraMtaRelayHost. However, there are needs to relay emails per domain basis. For example, you want emails sent by should be relayed through and through servers. You can configure it using "sender_dependent_relayhost_maps".

This is an example and tested on ZCS 5.0.16

1. Add following line to /opt/zimbra/postfix/conf/

sender_dependent_relayhost_maps = hash:/opt/zimbra/postfix/conf/bysender

2. Create file /opt/zimbra/postfix/conf/bysender and enter your domain names and relay server's IP addresses.  []  []

3. Create the hash file.

postmap /opt/zimbra/postfix/conf/bysender

4. Change the permissions.

chown root.postfix /opt/zimbra/postfix/conf/bysender /opt/zimbra/postfix/conf/bysender.db

5. Restart zmmtactl

zmmtactl stop
zmmtactl start

6. Test by sending emails.

Note: Above settings will not survive zimbra upgrades. Make sure you take backup of config files before upgrading.

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