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<p>Dear All,</p>
<p>Having upgraded my ancient MailScanner installation on Centos 5,
to running on Ubuntu 18.04 with Sendmail, I have encountered this
problem.</p>
<p>It seems the HTML Parser times out, which leads MailScanner to
strip the HTML part of emails out and send a message saying <br>
</p>
<p>"MailScanner was attacked by a Denial Of Service attack, and has
therefore deleted this part of the message."</p>
<p>Typically this was caused by Winmail.dat files and TNEF
attachedments, but I don't scan those to get round that issue.</p>
<p>In this case a simple HTML message caused it, and looking through
the logs this happens a lot, but only sometimes does Mailscanner
"bin the html part" and send the warning.</p>
<p><br>
</p>
<p>Having done some googling and testing it seems the HTML Parser
timesout waiting for Spamassassin or something like that.</p>
<p>So I increased the timeout for Spamassin from 75 seconds to 300
seconds just to see if this has an effect, in ConfigDefs.pl under
/usr/share/MailScanner...</p>
<p>Has anyone else seen this?</p>
<p>Pete</p>
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