[Dovecot] Duplicate E-mail Problem

[Timo Sirainen]

On Mon, 2007-04-16 at 13:21 -0500, Phillip T. George wrote:
> Apr 16 12:51:45 east dovecot: IMAP(user.domain.com), IP(70.177.64.93): 
> copy -> Spam: uid=718, msgid=<sameid at domain.com>
> Apr 16 12:51:45 east dovecot: IMAP(user.domain.com), IP(70.168.68.56): 
> copy -> Spam: uid=718, msgid=<sameid at domain.com>
> 
> It appears that the problem is that the user has two email programs 
> running the same filters at the same time.  Somehow, this creates a 
> duplicate message.  Any clues as to why this might be?  Are there any 
> options that may cause this behavior to change?  I thought maybe the 
> options "maildir_copy_with_hardlinks" and/or 
> "maildir_copy_preserve_filename" may be helpful options...(they're both 
> set to the default of 'no').

The message gets duplicated to Spam of course, but do you mean it also
gets duplicated to INBOX?

If you meant that they're duplicated in Spam, it just can't be helped.
It's perfectly valid for an IMAP client to copy the same message twice
to another mailbox. Set up a server-side filtering instead.

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