Ghost emails

Florian Gleixner flo at
Tue Jun 5 16:11:17 EDT 2007

As far as i understand cyrus imapd, it does not delete the message
instantly. It marks the message and the /usr/lib/cyrus/bin/cyr_expire
job deletes the message some days later. The delete job is configured in
  # this is only necessary if using duplicate delivery suppression
  delprune      cmd="cyr_expire -E 3" at=0400
deletes duplicte messages older than 3 days every day at 4am.

But i did not yet fully understand the entire process.

Giuseppe Ravasio wrote:
> Alle 07:30, martedì 5 giugno 2007, Florian Gleixner ha scritto:
>> Your logs say:
>> May 31 20:37:37 server lmtpunix[31094]: duplicate_mark:
>> <86D6BCB7F53B8D46980FE134992AA0020395DB3A at AMAILSERVER,it> .beppe+ at .sieve.
>> this means, that cyrus thinks this message is a duplicate of a existing
>> mail in the users mailbox. Some broken email clients may generate
>> non-unique Message-Ids (groupwise has this bug in one version, some
>> outlook versions, ...). Search your mail logs (/var/log/mail) whether
>> you see the Id 86D6BCB7F53B8D46980FE134992AA0020395DB3A at AMAILSERVER,it
>> for different incoming mails.
> I think that when a message is marked as duplicate i should see a line like:
> Jun  5 09:11:24 thot lmtpunix[23224]: dupelim: eliminated duplicate message to 
> user.beppe id <200706050911.08506.giuseppe_ravasio at> (delivery)
> in fact searching the id in a month logs returns only the lines included in my 
> first email... so it seems that there was no duplicate suppression.
> Last but not least it doesn't explain why the message is on the FS but not in 
> the IMAP folder's index!
> Giuseppe
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