Re: [exim] An interesting problem (apparent duplicate delive…

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Author: Wakko Warner
To: John W. Baxter
CC: exim-users
Subject: Re: [exim] An interesting problem (apparent duplicate delivery)
John W. Baxter wrote:
> I don't think so, Tom. The topmost Received: header(s) and Delivery-Date:
> would then differ, and thus the two copies would not have the same MD5
> checksum, which it is stated they do. I can certainly see your scenario
> happening elsewhere, though.
> I'd guess this one comes from a faulty interaction between the MUA and the
> POP (or IMAP, but POP seems more likely) server.

I have seen this my self and can easily reproduce it (if it's the pop server
case) If the client is outlook (specifically 2000 as that's what I have
seen the problem with) and they do not complete the download of the emails,
the DELETE command is never issued. Outlook likes to delete messages at the
end of the download. You may not see this if the client is configured to
leave messages on the server.

What did you use MD5sum against? the user's mail spool on the server (ie
bypassing the MUA) or the message after it was downloaded?

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