Hi to all. It's time to migrate an old server to a newer platform
Some questions:
what happens by changing the pop3/IMAP server on the client? Is the client (Outlook, Thunderbird,...) smart enough to not download every message again? I'm asking this because the easier way to migrate would be move all mailboxes to the new server and then change the hostname on the client
what if I add a dovecot proxy on the new server, proxing back all requests to the older one, if the mailbox is still not migrated? Would the whole pop3/IMAP transaction happen through the proxy or there is something an http redirect (or anything similiar to the SIP protocol) ?
I think the response to this is no: is dovecot able to log the hostname used for the connection? I have multiple domains pointing to the same IP. Something like the Host header in Http.