Postfix MX Backup

[drizzt]

Hi all,
I should activate an MX Backup server to store received messages when the Zimbra master server is down.

I know the postfix configuration is really simple, but I would like to know the best method to get domains from Zimbra and to populate relay_domains in postfix's main.cf.

Thanks in advance,
Giorgio Salluzzo

[uxbod]

Welcome to the forums

Do you want this to be a automated task ie. on a schedule the domains in ZCS will be dumped to a text file, transferred to your backup MX, and then updated in main.cf ? This may also be possible by a ldapquery directly from the Postfix instance.

[drizzt]

I think that an LDAP query from the slave should be a good solution but I don't have any experience with LDAP task.

Can you help me, please? ...also pointing me to a page or an old topic it's enough to sort out the problem.

Thanks again,
Giorgio

[rsharpe]

I would suggest you do a multi-server install setting up the MTA on your "backup" server. Just run the install script on the backup server, just install the MTA portion nothing else.

[drizzt]

The command to obtain the domain list is:
zimbra@smtp:~$ zmprov gad

It could be useful for somebody else...