IMAP proxy

[Aki Tuomi]

> On December 15, 2017 at 6:57 PM Gandalf Corvotempesta <gandalf.corvotempesta at gmail.com> wrote:
> 
> 
> I'm migrating an old server to another old server (same dovecot
> version in both servers)
> The migration itself is straightforward, stop dovecot on the old
> server, migrate everything via rsync, start dovecot to the new server.
> 
> There is only one step left: change the dns configuration, pointing
> from the old server to the newer one.
> As most of domains are not managed by me and some other domains are
> pointing to our server via IP, I can't simply change the A record or
> wait for all users to change their domain configuration.
> 
> TL;DR: is possible to use dovecot as IMAP proxy so that even after
> changing our dns records, any user directly connecting to my old
> server would be proxied to the newer one automatically ?
> 
> Any additional software or only a configuration change is required ?

Return from passdb, 'proxy host=your-new-host port=143 ssl=starttls'

Aki