Yan Seiner wrote:
> 
> I have the misfortune of being on a misconfigured spammer CD somewhere.
> Periodically, I get thousands of connections to port 25, scrolling
> through [EMAIL PROTECTED]  This amounts to a DOS attack,
> since legitimate mail may be held up for hours while my system spawns
> thousands of sendmails - just to reply no such user.  I can throttle
> this by limiting connections from a single IP, but it still means that I
> suffer through hours of limited bandwith while this leech sucks it up.

You might want to look at Postfix instead of sendmail. It has some
controls to limit the rescources used when connecting to sites. I can't
recall if it had an option that would help this particular issue, but it
would be worth looking at. I've been very happy with it as an MTA.

bryan

-- 
"A computer let's you make mistakes faster than any other invention,
with the possible exception of handguns and Tequila."       -- Mitch
Ratcliffe

Reply via email to