[vchkpw] Need advise on secondary mail server for backup purpose.

[Kuan Yik]

Hi,   I have already configured 2 MX record in DNS.   MX 10 mailserver1.mail.com MX 20 mailserver2.mail.com   I want to setup a secondary mail server to catch all the email when the primary mail server goes down and when the primary mail server up again then the secondary mail server will flush all the email to the primary mail server again. Is that possible? Is it somehting to do use witl the qmial-remote?   Is there any useful link can help me on this?   Please advise.