On Zimbra 8.0.7, I used hash for transport_maps, but that technology was abandoned on 8.5, so I had to use lmdb instead, so I reconfigured it this way:
postmap /opt/zimbra/postfix/conf/piler
postconf -e transport_maps="lmdb:/opt/zimbra/postfix/conf/piler proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"
zmlocalconfig -e postfix_transport_maps="lmdb:/opt/zimbra/postfix/conf/piler proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"
zmcontrol restart
That works until the next morning, when I check main.cf transport_maps reverted again to transport_maps="hash:/opt/zimbra/postfix/conf/piler proxy:ldap:/opt/zimbra/conf/ldap-transport.cf"
I've also tried to manually editing main.cf and replacing hash with lmdb but it still resets every morning, can this be somehow related to ZXBackup schedule that runs every dawn?
Thanks
Cassio