 | | | rh-l] Email Gateway solution | rh-l] Email Gateway solution 2005-08-10 - By R P Herrold
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On Wed, 10 Aug 2005, Steve Buehler wrote:
> I know of one company that has a series of mail servers. server1 receives
> all incoming mail and checks for spam deleting any spam. Then it sends it to
> server2 which checks for viruses and deletes them when found. Then it sends
> it to server3 for pickup by the clients. Of course they won't tell me their
> setup, but they will do the setup on my server for a very LARGE fee. About
> $3,000. I could setup a separate email server altogether for that. The
here it is for free:
0.0.0.0 -- MX 30 -|- MX 20 -|- MX 10 -- mailstore
The symbol '-|-' represents a filter - Iptables can do it fine
- which prevents any port 25 traffic to pass from left to
right, EXCEPT for the next higher numbered MX unit
Filtering of various types happens at each stage - RBL on the
'30; more smap and AV at the '20 - and it has the pleasant
effect of smoothing the inbound mail load
This is a common setup I have used at ISPs I have run.
-- Russ Herrold
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Copyright (C) 2005 R P Herrold | Owl River Company
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