RE: OutOfftopic: Exchange Server Smtp security rule
- From: Troy Radtke <TRadtke@xxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 26 Nov 2004 14:12:40 -0600
He's looking the whitelist only known e-mail servers. It's OT for this
list... But, anyway, that's a poor way of doing things. Check out some
server side SPAM filters for Excange/blah/whatever e-mail server you're
running. Or subscribe to RTBHL's and all of their evil ways..... If you want
a better answer, try an exchange list like Steve said.
-----Original Message-----
From: Steve Moffat [mailto:steve@xxxxxxxxxx]
Sent: Friday, November 26, 2004 1:46 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: OutOfftopic: Exchange Server Smtp security rule
http://www.ISAserver.org
Clients send mail through servers, so how can you block clients. And this
should be sent to an exchange list.
Steve
-----Original Message-----
From: Müller [mailto:mmuller@xxxxxxxxxxxxxxx]
Sent: Friday, November 26, 2004 1:16 PM
To: ISA Mailing List
Subject: [isalist] OutOfftopic: Exchange Server Smtp security rule
http://www.ISAserver.org
(Exchange Server 2000 on win2k box - generic smpt security question) ---My
question:
Its some form to indentify that the sender is an smtp server and not and
e-mail client, and only receive messages to "@mydomain", from smtp servers,
not form clients?
---My Problem:
Today, anyone from the internet can send mail to my public e-mail domain
"@mydomain" unsing my exchange-server as the SMTP server.
That's not a relay its rigth, cause I'm the owner of this public domain I
need accept all messages for it, but so I receive a lot of spam.
For correctness only smtp servers from other domains could send smtp
messages to my SMTP server and not e-mail clients.
PS:
I deny relay on my server, but accept it from my users if they authenticate
on the smtp server.
I'am not requering reverse lookup to accept messages cause many of clients
of my enterprise are not in conformance with dns reverse registrations.
Thanks,
Müller.
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