I agree that it isn't a good idea to notify the sender of a spam or virus message I'm not planning to do that, I know the troubles of backscatter.<br><br>What I've configured is that if a user sends a completely normal (non-virus, non-spam) E-mail but with, for instance, a file named "CurriculumVitae.doc.pdf" (default output for a lot of PDF printers). The server sends out a warning to sender and the original message stripped of it's attachment to the recipient of the message. Notifying the sender is not strictly necessary but if this is only done for such non-virus, non-spam message, it isn't a problem either.<br>
<br>The situation that bugs me is when some spam message with a file named "CurriculumVitae.doc.pdf" is received. The message hits the filename rule and<b> isn't processed any further to check if its a spam message</b>. Because it isn't processed any further, the warning messages are send out to both sender and original recipient.<br>
<br>As I stated before, I can disable the sender notification. What I can't do is tell my customers (the recipients) that such wrongly named files, most containing important documents, are silently discarded. Sending spam to my customers that could have been recognized isn't an option either.<br>
<br>The simplest solution, I think, would be to <b>continue processing</b> the message after a file name rule is hit, decide if the E-mail is HAM and in that case, send out the notifications. If the E-mail is spam, silently discard it.<br>
It would add a bit of load to the server but stopping spam is what it's all about, isn't it? :P<br><br><div class="gmail_quote">On 1 September 2011 16:34, Julian Field <span dir="ltr"><<a href="mailto:MailScanner@ecs.soton.ac.uk">MailScanner@ecs.soton.ac.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">He's probably switched on some "Notify Senders" options. Bad idea :-(<div class="im"><br>
<br>
On 01/09/2011 12:32, Martin Hepworth wrote:<br>
</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">
what version of MS?<br>
<br>
I never inform the sender of junk as you end up with fake messages sent out.<br>
<br>
-- <br>
Martin Hepworth<br>
Oxford, UK<br>
<br>
<br></div><div class="im">
On 1 September 2011 08:17, Joolee <<a href="mailto:mailscanner@joolee.nl" target="_blank">mailscanner@joolee.nl</a> <mailto:<a href="mailto:mailscanner@joolee.nl" target="_blank">mailscanner@joolee.nl</a>><u></u>> wrote:<br>
<br>
Hallo Everybody,<br>
<br>
I've experienced a small flood of virus E-mails. These E-mails<br>
(subj.: "ACH Payment *random number* Canceled") contain<br>
attachments named like: "report_082011-65.pdf.exe"<br>
They obviously get blocked by the "no executables" and "No double<br>
file extensions" rules. The problem is that after blocking them,<br>
an automated E-mail is send to the original recipient and the (faked) sender of the message, informing them of the blocked<br>
attachment.<br>
<br>
Had the E-mails been processed further, they would've probably hit<br>
the virusscanner (not tested) or spamassassin (gives a score of 27<br>
when tested) and the E-mail would've silently been discarded as a<br>
virus / spam / phishing.<br>
<br>
Is it possible to let the MailScanner continue it's processing<br>
when hitting the file name rules and / or running the filename<br>
rule at a later time?<br>
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</blockquote>
<br>
-- <br>
This message has been scanned for viruses and<br>
dangerous content by MailScanner, and is<br>
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