[Dovecot] Multiple copies of a message

[Benjamin R. Haskell]

On Wed, 30 Jan 2008, Anne Wilson wrote:
> On Tuesday 29 Jan 2008, Asheesh Laroia wrote:
>> On Tue, 29 Jan 2008, Anne Wilson wrote:
>>> I have a problem and I don't know which part of the mail chain could be
>>> causing it, although dovecot does seem to be the most logical source.
>>>
>>> I get multiple copies of messages to my Inbox.  I have just deleted 24
>>> copies of a newsletter from Computer Shopper.  The worst example I have
>>> seen of this had more than 90 copies.  This doesn't happen to any
>>> subfolder of Inbox, just Inbox itself.
>>
>> Does your SMTP server's logs indicate receiving it multiple times?
>>
> I don't have one of the big ones still on my disk, but I have a couple where I
> have allowed two copies to remain.  /var/log/maillog shows just one copy of
> each of them.
>
>> Me, I use a procmail recipe that removes duplicates, so I don't see
>> duplicate messages if they have the same Message ID.  Also, what do the
>> headers of these "duplicates" suggest - are they fully identical?.
>>
> They are identical until the last lines, which read
>
> X-UID: 2039
> X-KMail-Filtered: 65014
> Status: RO
> X-Status: OC
>
> and
>
> X-UID: 2040
> X-KMail-Filtered: 65015
> Status: RO
> X-Status: OC
>
> Similarly,
>
> X-UID: 2041
> X-KMail-Filtered: 65016
> Status: RO
> X-Status: OAC
>
> and
>
> X-UID: 2042
> X-KMail-Filtered: 65017
> Status: RO
> X-Status: OAC
>

Have you changed anything recently with your kmail filters? Are you 
running more than one mailserver? Dovecot doesn't add the X-UID field, so 
I suspect it wouldn't be changing it, either.

Best,
Ben