How to secondary mx or secondary mailserver holds mailqueue if primary server is down.
How to backup mx or secondary mailserver holds mailqueue if primary server is down. Domain >arvind-madhukar.info Server1>linux1.arvind-madhukar.info (1.1.1.1) Server2>linux2.arvind-madhukar.info (2.2.2.2) On Server2>linux2.arvind-madhukar.info (2.2.2.2) ------------------------------------- Add/edit domain(arvind-madhukar.info) in /etc/secondarymx Add/edit domain(arvind-madhukar.info) in /etc/remotedomains Note: Allow (1.1.1.1) in your trusted host and Graylisting (Mail) Server1>linux1.arvind-madhukar.info (1.1.1.1) ------------------------------------- Modify dns zone file as below on primary server: arvind-madhukar.info 14400 IN mx 0 arvind-madhukar.info mx2 14400 IN A 2.2.2.2 arvind-madhukar.info 14400 IN mx 2 mx2.arvind-madhukar.info