Replication - hostname issue

[Teemu Huovila]

On 03.01.2016 20:53, Petter Gunnerud wrote:
> I have postfix/dovecot setup on a virtual gentoo server. It's been in service for almost two years without any issues.
> Now I want to set up a spare server to replicate mails from the one running. I copied the vm files to the second host server, changed the ip, hostname and hosts file for the copy and followed the dovecot replication doc.
> The last point in the doc tells to rundovecot --hostdomainto make sure the hostnames differ... To my surprise the command returned "localhost" on both servers.
> How do I set the hostname for dovecot service?(The hostname command returns the servers hostnames.)
You can define what hostname dovecot uses, by setting the environment variable DOVECOT_HOSTDOMAIN.

It would also be interesting to see what "getent hosts" returns on your servers. Using the "hostname" command is not quite the same thing.

> Will a change in dovecot hostname make all clients redownload all their mail?
I can not speak for any/all clients, but I do not see how a change in the imap server name would make clients redownload email.


> A second question. When configuring dovecot replication. Should the settings be done on the master server or the stand by server, or both? (Doc doesn't say anything regarding this)
> PG
This depends on how you want the syncding to be done. If it is two way master-master, then you need to configure it on both. I think this might probably be what you want anyway.

br,
Teemu Huovila