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Denis Beauchemin Denis.Beauchemin at USHERBROOKE.CA
Thu Feb 3 18:35:42 GMT 2005

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Marcel Blenkers wrote:

>Hi there,
>the method to block or stop mails to unknown recipients seems to be fine.
>But the last day i just made tail -f on my maillog, and noticed, that
>someone is sending a lot mails to postmaster within seconds.
>So, the accout postmaster is existing, but it seems to me that this person
>tried to get my maschine into its knees..
>is there a way to block someone sending a lot of  mails within a few
>seconds automaticaly?
>As these mails where no spam, just mails with some weird content, vispan
>did not work, as these mails where not tagged as spam.
>So i am wondering if there is a way to have a script looking into the
>logfile, and if one ip is sending max-mails within x seconds, add this ip
>to he access-file as blocked..


MailScanner offers IPBlock in CustomConfig.pm.  It does pretty much what 
you want (as long as you use sendmail).  I have been using it here for 
almost a year with success.


  °v°   Denis Beauchemin, analyste
 /(_)\  Université de Sherbrooke, S.T.I.
  ^ ^   T: 819.821.8000x2252 F: 819.821.8045

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