[Dovecot] POP UIDL

[Timo Sirainen]

On 14.10.2012, at 5.07, simon.buongiorno at gmail.com wrote:

> I run a small mail server with Dovecot and postfix. Several of the accounts are popped by an external email provide I use, mostly out habit and also for a bit of redundancy. I have no details on that external server except that it uses exim.
> 
> Lately, it's been repopping mail from accounts (mail is left on the server so I can use IMAP) at fairly frequent, but undetermined, intervals. Before I take it to them, I want to be sure it's not an error on my side. How can I be sure Dovecot does not have a problem with the UIDL list causing this external server to repop the mail?
> 
> For the record, I'm not inclined to think it's a Dovecot issue, but since that's the bit I can fix, I'd like to be sure.

dovecot -n output would have helped. Anyway, some POP3 clients become confused if there are duplicate UIDLs. Recent v2.1 versions have a pop3_uidl_duplicates setting to avoid those.