From Larry Niebur, received 22/10/02, 2:11 pm -0500 (GMT):
Hi,Yes, for a number of domains we host that get megatons of spam (such as ultradesign.com) I use a SIMS server in front of a CommuniGate Pro server. The SIMS server is on a PPC8500 which also runs DoorStop (software firewall) with the worst IP ranges firewalled from port 25 (nothing from 202.*, 200.*, etc.)
I've never used an MX server, but I'm wondering if I could use SIMS as an MX server ahead of an AppleShare IP (ASIP) mail server in one of my schools to try and skim off Spam before it gets to the ASIP server.
Is anyone doing something like that?
The SIMS server is one of two here (the other one is the backup MX to our main CGP server) and has about 5 DNSBLs and lots of local error and spamtrap routing, and bounces approx 80% of incoming email. The 'clean' SMTP feed is then passed to the CommuniGate Pro server for further frisking (CommuniGate Pro has fabulous content filters, virus filter, etc) which weeds out the remaining spam. The result is we get almost no spam to those domains and our normal customer domains which MX straight to the CGP server are not impaired by over-zealous filtering.
All you do to set it up, is set your domain's MX as the SIMS server, then in SIMS' router you reroute the incoming to the other server. We do it like this:
ultradesign.com. MX 10 titanium.ultradesign.net. (SIMS)
in SIMS router: <*@ultradesign.com> = *@spamfilter.ultradesign.net
spamfilter.ultradesign.net. MX 10 sentinel.ultradesign.net. (CGP)
The only drawback is that Unknown Users are only bounced by the second server.
--
Steve Linford
Ultradesign Xtreme Network
http://www.uxn.com
#############################################################
This message is sent to you because you are subscribed to
the mailing list <[EMAIL PROTECTED]>.
To unsubscribe, E-mail to: <[EMAIL PROTECTED]>
To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]>
To switch to the INDEX mode, E-mail to <[EMAIL PROTECTED]>
Send administrative queries to <[EMAIL PROTECTED]>
