From: mouss (mlist.onlyfree.fr)
Date: Sun Apr 01 2007 - 10:22:55 CDT

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poboxverysmall.org wrote:
>
> There is a FreeBSD dedicated server with Postfix/Cyrus, Squirrelmail
> and another php application - the Squirrelmail and the php application
> did not have any problems to send mail. And there is a Windows
> workstation where I tried Thunderbird (my primary mail client) and
> Outlook Express (which I set for the test) - during this period both
> gave the impression that mail is sent, but mail did not arrive,
> neither was logged in maillog, nor was it in the queue, to my
> experience (I might have missed something) I could not find any trace
> of the mail with 'grep'. Somebody advised me to try to send mail using
> telnet from the Workstation, but at this moment I did not know how and
> when I found out how on the next day, the problem did not exist
> anymore. So I can't tell if telnet would have worked (resp. I do not
> know what telnet would have reported, i.e. somebody mentioned that it
> might be a DNS problem).

try resending the _same_ message from the same machine. if the AV
quarantines it, then you get the guilty. now, the AV config may have
changed (or it may have dynamic rules....) so you are not guaranteed to
reproduce the problem, but it's worth to try. and as I said in my
previous post, check the AV quarantine. of course, this all assumes you
are (were) running an AV on the client box.

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