On 12/02/2010 11:15 PM, Ramesh wrote: > > Hi All, > > I have configured backup server, which is working as expected when > ever primary not reachable mail are queued in back Mail server, later > pushes to primary mail server. > > I would like to know, how to make backup to primary mail server, in > case primary is down due to major issues. so that all mail clients > send and receive from backup mail server. > > appreciate suggestion.
"Primary" and "backup" are a fiction. What makes your primary server "primary?" You can probably come up with a list: * It's listening on the IP addresses to which your MX records point * It isn't configured to forward anywhere * It allows SASL authentication * ... You should make such a list; when you're done, title it, "things I need to do to the backup server to make it the primary."