Rajesh M wrote:
hi
i am planning to migrate a client's domain from one server to another
the problem that worries me is that many users store a copy of the emails
on the server for around 30 days
i dont want their outlook to start downloading all the emails once again
how do i achieve this ?
rajesh
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I don't know specifically, but maybe I can help. I presume you're
talking about pop3 users who leave messages on the server.
In order to know which messages have already been downloaded, the pop3
protocol uses a UIDL map to identify messages. The client keeps track of
which messages have already been downloaded. So if a messages is in the
UIDL map that hasn't been downloaded yet, the client fetches it.
In the case of IMAP, the UIDL map is stored in a file. Courier uses
courierimapuiddb and dovecot uses dovecot-uidlist.
Pop3 uses a different UIDL map than IMAP though. I'm not sure, but I
think pop3 builds the UIDL map dynamically for each request, so it's not
actually stored anywhere on the server. You'll need to verify this to be
sure. If this is the case, then you shouldn't have a problem at all.
HTH
--
-Eric 'shubes'
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