dovecot - Sep 2007 - multiple emails

I have a weird issue where several users are recieving the same  
email's multiple times.  Each email has a different que id, but are  
exactly the same otherwise.  I thought at first this was a new spam,  
but I have local users doing the same thing.   Im not sure where to  
start looking for the root of this problem.  Seems to be pretty  
widespread across multiple platforms.   I currently utilize openldap  
for user database, sendmail, Dovecot-Imap, and horde webmail.  Im not  
sure where to start digging for this problem, Ive scanned through all  
my log files and havent found anything.  Any guidance would be great.

thanks,

ddh


-- 
Dwayne Hottinger
Network Administrator
Harrisonburg City Public Schools

I've seen this when antivirus/spamassassin is run during the SMTP
Session.  What happens is that av/sa scan takes too long for the client,
the client times out, and resends the email later.  Meanwhile, the
server completes it's part, and delivers the message.  Then it happens
again when the client retries.

Telnet in and send an email manually, see how long it takes.   Obviously
larger email would take even longer.

Rick

On Mon, 2007-09-10 at 12:54 -0400, dhottinger at harrisonburg.k12.va.us
wrote:
> I have a weird issue where several users are recieving the same  
> email's multiple times.  Each email has a different que id, but are  
> exactly the same otherwise.  I thought at first this was a new spam,  
> but I have local users doing the same thing.   Im not sure where to  
> start looking for the root of this problem.  Seems to be pretty  
> widespread across multiple platforms.   I currently utilize openldap  
> for user database, sendmail, Dovecot-Imap, and horde webmail.  Im not  
> sure where to start digging for this problem, Ive scanned through all  
> my log files and havent found anything.  Any guidance would be great.
> 
> thanks,
> 
> ddh
> 
>