How do you manage concurrent connections in Sendmail? I know about confCONNECTION_RATE_THROTTLE and WINDOW_SIZE but is there anything that will limit the number of concurrent connections from a single IP address?<br><br>
-Vlad<br><br><div><span class="gmail_quote">On 8/31/07, <b class="gmail_sendername">Gareth</b> <<a href="mailto:list-mailscanner@linguaphone.com">list-mailscanner@linguaphone.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
cat /var/log/maillog | grep -E "(connection count|concurrency)"<br>Looking through my logs there have been the odd one or two IP addresses in<br>the past with about 10 active connections at once but starting from the 27th
<br>I started to see connection of over 20 concurrent.<br><br>I have dropped the concurrent connections per IP from 50 down to 5. We only<br>have a 1Mbps internet connection so if any genuine person tries to send us<br>more than that at the same time I would prefer to limit it to conserve
<br>bandwidth anyway.<br><br>I think I'll do what you did and reduce the smptd_timeout aswell.<br><br>> -----Original Message-----<br>> From: <a href="mailto:mailscanner-bounces@lists.mailscanner.info">mailscanner-bounces@lists.mailscanner.info
</a><br>> [mailto:<a href="mailto:mailscanner-bounces@lists.mailscanner.info">mailscanner-bounces@lists.mailscanner.info</a>]On Behalf Of Leland<br>> J. Steinke<br>> Sent: 31 August 2007 18:55<br>> To: MailScanner discussion
<br>> Subject: Re: Heavy increase in spam influx this week?<br>><br>><br>> Kai Schaetzl wrote:<br>><br>> > My Postfix machines still suffer from the backlog of bots, as I<br>> haven't checked yet
<br>> > if Postfix provides similar time-out options. Anyone knows?<br>><br>> smtpd_timeout?<br>><br>> I started reducing this from 300s to 120s several moments ago, after<br>> catching up on my email after a particularly long meeting discussing,
<br>> among other things, requirements for new spam/virus filtering servers...<br>><br>><br>> Leland<br>> --<br>> MailScanner mailing list<br>> <a href="mailto:mailscanner@lists.mailscanner.info">mailscanner@lists.mailscanner.info
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http://wiki.mailscanner.info/posting</a><br>><br>> Support MailScanner development - buy the book off the website!<br>><br>><br>><br><br>--<br>MailScanner mailing list<br><a href="mailto:mailscanner@lists.mailscanner.info">
mailscanner@lists.mailscanner.info</a><br><a href="http://lists.mailscanner.info/mailman/listinfo/mailscanner">http://lists.mailscanner.info/mailman/listinfo/mailscanner</a><br><br>Before posting, read <a href="http://wiki.mailscanner.info/posting">
http://wiki.mailscanner.info/posting</a><br><br>Support MailScanner development - buy the book off the website!<br></blockquote></div><br><br clear="all"><br>-- <br>-Vlad