[Dovecot] UIDLs problem on migration to dovecot

Oscar A. Jara
2013-05-27T18:08:06Z

Hello list,

I'm about to migrate from Courier 4.6 (POP and IMAP) to Dovecot 1.2. I
am currently trying to match UIDLs of both servers to avoid redownload
of mails but I could not success. I've already configured dovecot POP3
to format UIDLs like this:

pop3_uidl_format = UID%u-%v

I also executed the script 'courier-dovecot-migrate.pl' to do the
migration in a couple of test accounts but the IDs don't match for all
mails and the script didn't report any errors. I have production
courier pop3 server running on port 110 and the new dovecot server
running on another port. Here I paste some of the missmatches in one of
the test accounts:

8827 UID9060-1259354075 | 8827 UID9041-1259354075
8828 UID9061-1259354075 | 8828 UID9023-1259354075
8829 UID9062-1259354075 | 8829 UID9067-1259354075
8830 UID9063-1259354075 | 8830 UID9064-1259354075
8831 UID9064-1259354075 | 8831 UID9043-1259354075
8832 UID9065-1259354075 | 8832 UID9061-1259354075
8833 UID9066-1259354075 | 8833 UID9025-1259354075
8834 UID9067-1259354075 | 8834 UID9047-1259354075

One thing that I don't know if is important is that I am using
dovecot-lda since long ago, not courier lda.
I don't know what I am missing here and I would appreciate some help.
Thank you.


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