Backup Mailserver

I’m wondering if anybody here has succesfully setup a Backup mailserver for all domains hosted on a Interworx box. Including setting up the backup mailserver for every domain automaticly when a domain/site is added.

Nobody done this?

Well, you could always get a system setup to relay incoming e-mails to the central Interworx box being used for e-mail (and have 2 MX records, your primary interworx server taking priority).

My setup is as follows:
Incoming email --> mailfoundry anti-spam appliance (MX Priority 10) --> Interworx Server

Incoming email --> Interworx server (MX Priority 20)