Hi Victor, thanks for your response.
> > I want to use postfix for active/active mode. > > No, you want to cluster your mailstore (IMAP, POP, ...). > This is not > Postfix. Multiple Postfix MX hosts do not need to be > clustered, the > SMTP design automatically load-balances multiple MX hosts. That is true. It might be easy if two mail server (with MX record) are located in the same physical location. We can use a different server (imap store) or shared storage for storing the mails for two mail servers. but if the mail servers are located in a different location, it will be hard to maintain such a shared mailstore. Peter