[Greylist-users] Stopping "machine gunners" - not really a

Dennis Wynne DWYNNE at equinoxis.com
Mon Mar 13 06:26:00 PST 2006

>I think you want something like Sendmail 8.13.x's ratecontrol and
>conncontrol throttle options.

I had one of these options set, but added the other one - thanks.

We had a spammer hit last week with nearly 200 messages in just a few 
minutes, greylist temp failed all of them and only 2 went through. The 
brevity of the attack made me wonder why the connection parameters did not 
block more of them. Turns out the spammer did not disconnect in between 
e-mails - just connected up and let fly.

I Googled about this problem and it appears to be a weak spot in sendmail - 
no  way to limit messages per connection.  Looks like I will need a milter 
to do this or maybe something like this patch:


Did I miss something (again) in the sendmail setup - or is there no way to 
limit messages per connection?


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