HA Linux Mail Server – Part 0

I’ve been working on a project to learn more about RHCS in general and decided to build a HA Mail server.

Technologies Used:
– Centos 6.6
– Postfix
– Dovecot (IMAP)
– OpenLDAP
– GlusterFS
– Roundcube

Over the coming weeks I’ll be posting the steps required to set this up.

The general idea is to have two RHCS services


  • VIP for postfix/dovecot
  • glusterfs for delivered mail, postfix and dovecot configuration files


  • VIP for mysql
  • glusterfs for mysql config and data


Each node runs the following locally

  • httpd + roundcube
  • OpenLDAP replicating from another LDAP server

While the above two services could certainly be cluster services, this is not required.

We NAT our public IP to the VIP for mail-svc.

To avoid SSH key issues, copy your SSH keys from /etc/ssh to the other node (So SSH to the public IP will not result in errors after a failover)



Leave a Reply

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload CAPTCHA.