Hi,
I didn't know where to post this one so I'll start off with you guys and then try Postfix if I'm barking up the wrong tree!
Having set up my mail server (Dovecot/Postfix), users are experiencing long delays (a couple of minutes) when sending mail from mail client such as Thunderbird - this increases with attachments. Having had a brief discussion with someone, they mentioned that the reason that this may be to do with the size of the mailbox. I couldn't see the rationale behind this unless Dovecot is syncing the mailbox after every sent mail (due to possibly saving the sent item?) The mail is being delivered successfully but the amount of time it is taking to complete the action is far too long!
Sorry this is a bit vague but any advice on trying to diagnose the problem would be appreciated.
Thanks in advance!
Tim