Heavy increase in spam influx this week?

[Vlad Mazek]

Aaah. So reading TFM helps :)

Thanks Mike, that did it.

-Vlad

On 9/2/07, Mike Kercher <mike at vesol.com> wrote:
>
> http://technoids.org/dossed.html
>
>
>
> ________________________________
>
>         From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf Of Vlad
> Mazek
>         Sent: Sunday, September 02, 2007 5:06 PM
>         To: MailScanner discussion
>         Subject: Re: Heavy increase in spam influx this week?
>
>
>         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?
>
>         -Vlad
>
>
>         On 8/31/07, Gareth <list-mailscanner at linguaphone.com> wrote:
>
>                 cat /var/log/maillog | grep -E "(connection
> count|concurrency)"
>                 Looking through my logs there have been the odd one or
> two IP addresses in
>                 the past with about 10 active connections at once but
> starting from the 27th
>                 I started to see connection of over 20 concurrent.
>
>                 I have dropped the concurrent connections per IP from 50
> down to 5. We only
>                 have a 1Mbps internet connection so if any genuine
> person tries to send us
>                 more than that at the same time I would prefer to limit
> it to conserve
>                 bandwidth anyway.
>
>                 I think I'll do what you did and reduce the
> smptd_timeout aswell.
>
>                 > -----Original Message-----
>                 > From: mailscanner-bounces at lists.mailscanner.info
> <mailto:mailscanner-bounces at lists.mailscanner.info>
>                 > [mailto:mailscanner-bounces at lists.mailscanner.info]On
> Behalf Of Leland
>                 > J. Steinke
>                 > Sent: 31 August 2007 18:55
>                 > To: MailScanner discussion
>                 > Subject: Re: Heavy increase in spam influx this week?
>                 >
>                 >
>                 > Kai Schaetzl wrote:
>                 >
>                 > > My Postfix machines still suffer from the backlog of
> bots, as I
>                 > haven't checked yet
>                 > > if Postfix provides similar time-out options. Anyone
> knows?
>                 >
>                 > smtpd_timeout?
>                 >
>                 > I started reducing this from 300s to 120s several
> moments ago, after
>                 > catching up on my email after a particularly long
> meeting discussing,
>                 > among other things, requirements for new spam/virus
> filtering servers...
>                 >
>                 >
>                 > Leland
>                 > --
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>         --
>         -Vlad
>
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-- 
-Vlad
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