Triburb-per-domain-relay-zimbra

Relay One domain mail in zimbra

Objective Due to blacklisting of the server IP need to relay alokind.com from another server provided by client.

Process to Follow

zmlocalconfig   |grep -i postfix_transport_maps
This configuration decide how mails should deliver.

vi /opt/zimbra/postfix/conf/transportfile

Create a transport file to provide the Entry of the domain to relay from the server.
ENTRY SHOULD LIKE: gmx.com :[smtp.server.net.id]
#for relaying with the specific port for any domain
richaglobal.com :[mail.tetrain.com]:587
ll /opt/zimbra/postfix/conf/transportfile
Check the permission of the file it must be zimbra.zimbra

For Zimbra Version less than 8.x , below is the process

postmap /opt/zimbra/postfix/conf/transportfile
zmlocalconfig -e postfix_transport_maps="hash:/opt/zimbra/postfix/conf/transportfile proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"
Make hash for the ldap-transport.cf by transport file
less /opt/zimbra/postfix/conf/main.cf

zmmtactl restart

Source[[1]]

For Zimbra Version 8.x , below is the process

zmprov ms mail.example.com zimbraMtaTransportMaps "lmdb:/opt/zimbra/postfix/conf/transportfile,proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"

or

zmprov ModifyConfig  zimbraMtaTransportMaps "lmdb:/opt/zimbra/postfix/conf/transportfile,proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"

Reference - https://community.zimbra.com/collaboration/f/1886/p/1137087/1581157#1581157