[Dovecot] Re-downloading mails after migrate server

[Esther Yébenes --Conzentra--]

Hi all,

first of all, I must say that I am pretty new to mailing lists, so 
please, if I do something wrong, just tell me.

Now, my problem.
I'm migrating a mail service from a temporal to a definitive server. 
Both servers have the same versions (Postfix, Dovecot -1.0.7, POP3 & 
IMAP services-, MySQL) and it all works perfectly.
The only problem is with the users that store their mail on the server; 
on the testing, when I check if there is new mail, I download the mail 
stored on the new server once more. After that, it works correctly (no 
more unwanted downloads), but I need to avoid that first download.

I have been investigating before writing to the list. I have checked 
that UIDL are the same on both servers, and the configuration is exactly 
the same except for the name of the server; I have seen in few places 
that it may be the cause for downloading thdovecote mail again, so I 
changed the name of the new server to the old's one, but it happened again.

I know that lots of servers are migrated every day, and never heard 
about those problems, so I suppose it must be a solution for this, or 
maybe a better way to configure the servers.

If you wanna take a look at the configuration of both servers, I have 
pasted them on here --> http://pastebin.ca/2051228

Please, let me now if you need any more information.


Thanks in advance
-- 

Esther Yébenes
esther.yebenes at conzentra.com <mailto:esther.yebenes at conzentra.com>
Tel. +34 93 412 3750. Ext. 306
Fax. +34 902 889 440
Conzentra
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www.conzentra.com <http://www.conzentra.com>