that all you need on the DNS side.
On the mailserver1 you'll need to have qmail configured to receive mail for your domain (or domains) and on mailserver2 also (basicly have all your domains in $QMAILPATH/control/rcpthosts).
Kuan Yik writes:
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?