Ramesh: >Presently we have primary MX and backup MX servers, when primary >goes down mails will be queued in secondary MX, once primary restored >all messages pushed from backup MX to primary MX, messages are not >lost. I would like to know any solution sending and receiving >messages from backup MX when primary MX is down?
This is the wrong question on the wrong mailing list. The right question is "I need a message store that is replicated in multiple locations". Once you have such a message store, any number of Postfix MTAs and mail clients can use it. Wietse