Relay per Domain

Revision as of 02:36, 5 June 2009 by Irfan (talk | contribs) (New page: == Relay per domain == Currently Zimbra allows relaying emails to a specific server only, i.e using zimbraMtaRelayHost. However, there are needs to relay emails per domain basis. For exam...)

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Relay per domain

Currently 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 users@domain1.com should be relayed through smtp.domain1.com and users@domain2.com through smtp.domain2.com servers. You can configure it using "sender_dependent_relayhost_maps". This is an example and tested on ZCS 5.0.16.

Reference bug: [1]

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

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.

@domain1.com [10.10.10.1] @domain2.com [20.20.20.1]

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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