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Re: Throttling mail
- From: Scott Call
- Date: Thu Mar 25 13:44:01 2004
On Thu, 25 Mar 2004, Adi Linden wrote:
> Does anyone have any resources on building a mail relay that would limit
> the amount of email a single user or ip address can relay over a given
> time period?
> I have a spam/virus problem that is getting out of hand.
Depending on your MTA poison of choice there's lots out there. Personally
I use exim in most of my deployments, and it has a very nice progressive
rate limiting feature (ie accept two MAIL commands with no delay, at 0.5
seconds for the third, scaling at a rate a 1.05 times per message until 5
minute delay per message is reached) that is fully configurable.
Exim, as well as almost every other MTA out there has support for inline
virus scanning, which may help with your problem as well.
Scott Call Router Geek, ATGi, home of $6.95 Prime Rib
I make the world a better place, I boycott Wal-Mart
VoIP incoming: +1 360-382-1814