I've just one thing to add to this. If you're running spamdyke, it's fairly normal to see TIMEOUT messages in the log. These are spam connections that don't go away gracefully, and they follow a DENIED message of some sort. OTOH, if you see TIMEOUT message with no prior DENIED message, that would probably result in a duplicate being sent again later.

BL, spamdyke's TIMEOUT log messages are in most instances considered normal. There can be exceptions though.

--
-Eric 'shubes'

Michael Colvin wrote:
It's more likely your server is getting hammered with SPAM, and connections
are timing out.  Look at the e-mail headers on the first duplicate message
and see if the header is missing Spamassassin scoring/header information.
It will most likely have ???'s in place of the scores.

What I've seen is, when you server gets hammered, Spamassassin bogs down and
takes too long to process the message.  This causes the sending server to
resend the message after timing out.  You could also look through your logs
for "TIMEOUT", I believe.

If you're not running SpamDyke, do.  It pretty much kills the issue with
Spamassassin getting overloaded, and eliminates, at least this cause for
duplicates.

Michael J. Colvin
NorCal Internet Services
www.norcalisp.com


-----Original Message-----
From: Jim Shupert [mailto:[email protected]]
Sent: Tuesday, June 08, 2010 1:42 PM
To: [email protected]
Subject: Re: [qmailtoaster] Re: Receiving two copies of every mail.

I have also seen the - user gets multiple emails -- and then it stops.
i has happened rarely.
and i have told folks that -I am sorry - it is OK - it will stop doing
that.
and indeed ... it always has.

I have suspected - but not proven that it *can* happen when the
following is true
the user get email from 2 locations [ dsktop & laptop ] at one of them
they are leaving the email on the server fro 5 days.
at the other it is deleted from the server upon reading.

for whatever reason this results in ... the flag not being set -- or
whatever and the mail can come down ...more than once.

i just offer that
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Qmailtoaster is sponsored by Vickers Consulting Group 
(www.vickersconsulting.com)
   Vickers Consulting Group offers Qmailtoaster support and installations.
     If you need professional help with your setup, contact them today!
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