Re: [Dovecot] Duplicate E-mail Problem

[Phillip T. George]

Hmm.  Thats interesting.  The thing is, its only happening for one user 
that I'm aware of.  Also, I probably should of mentioned that I'm using 
Maildir ... I'm sure that changes things :)

-Phillip
Stewart Dean wrote:
When this happens with sendmail, it can be that the queue handler 
doesn't finish before a new queue handler is kicked off, so each 
successive queue handler/runner ends up sending the same mail.
Background: sendmail, and perhaps postfix, is configured to a) toss 
stuff it can't handle right away into the queue and then, every so 
often (interval to be set by admin), it burps the queue.  If the 
interval is too short, the previous queue handler/runner doesn't 
complete before a new one is invoked and gets it list of things to 
mail...with the same email on both queue handler/runners incarnations 
to do list...........

Phillip T. George wrote:
Hello all,

Definitely congrats on the 1.0.0 release!

Anyway, I'm having a problem, that may or may not be related to 
Dovecot.  Specifically, duplicate (and sometimes triplicate) emails 
are appearing.  These emails have exactly the same queue ID, so its 
not that they were sent multiple times.  These dup emails do not show 
up to me ever.

Postfix is being used as the SMTP, and it hands it over to procmail.  
I set up procmail's verbose logging feature for that user and on the 
duplicate emails that he receives, it shows only ONE write to a file 
for that specific subject of email.  Tonight / this morning I'll be 
tracking down to see if this duplicate for sure happens in IMAP.

Note: Its possible that part of the problem is he leaves two IMAP 
clients open at the same time (Netscape I think).  I'm going to 
verify that with him.

Any ideas?  I'm NOT trying to blame Dovecot, I'm just trying to 
explore options.  Right now its looking fairly bad for Dovecot 
though....I mean, what else is there after the mail is delivered to 
the appropriate place in the mailbox?

Software versions:
postfix 2.3.8
procmail 3.22
dovecot 1.0.rc28

Thanks,
Phillip