Have you noticed any overhead on that? We tried it, and and our SMTP relay server started sending delay notifications to some users. ----- Original Message ----- From: "Jim Harrison" <jim@xxxxxxxxxxxx> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> Sent: Tuesday, April 09, 2002 1:36 PM Subject: [isalist] Re: Any chance if using SMTP blacklists? > http://www.ISAserver.org > > > Hiya Thor, > > ISA doesn't do anything it wasn't doing before (SMTP server pub in this > case). > I just noticed a hole in the request and thought I'd fill it with the > right solution. > Basically, my mail server does a reverse-lookup on the IP of the sending > host and if it's listed in any one of several relays I use, I reject it > out-of-hand. > I don't have to waste time in the mail router or the virus checker > either; it's just gone. > > ..I lose more spam that way... ;-) > > Jim Harrison > MCP(NT4, W2K), A+, Network+, PCG > http://isaserver.org/authors/harrison/ > Read the books! > ----- Original Message ----- > From: <Thor@xxxxxxxxxxxxxxx> > To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> > Sent: Tuesday, April 09, 2002 10:10 AM > Subject: [isalist] Re: Any chance if using SMTP blacklists? > > > http://www.ISAserver.org > > > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > At 09:59 AM 4/9/2002, you wrote: > >http://www.ISAserver.org > > > > > >I use two exclusively: > >http://www.mail-abuse.org > >and > >http://relays.osirusoft.com/ > > > So, what are you doing? You doing a reverse DNS lookup before delivering > the mail? Where does ISA come into play here? > > > -----BEGIN PGP SIGNATURE----- > Version: PGP 7.1 > > iQA/AwUBPLMgj4hsmyD15h5gEQJFpACgq3zeY8eyvK0Lb5fu8ahhL0S0gb8An3BX > IKiZBlGPbfqk6/iCquKNHyxx > =JOTt > -----END PGP SIGNATURE----- > > ------------------------------------------------------ > You are currently subscribed to this ISAserver.org Discussion List as: > jim@xxxxxxxxxxxx > To unsubscribe send a blank email to $subst('Email.Unsub') > > > > ------------------------------------------------------ > You are currently subscribed to this ISAserver.org Discussion List as: wit@xxxxxxxxxx > To unsubscribe send a blank email to $subst('Email.Unsub')