RE: SMTP Filter help
- From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 6 Jun 2003 12:32:10 -0500
Hi Casey,
The SMTP filter doesn't do anything with POP3 connections. On the other
hand, the POP3 filter does :)
HTH<
Tom
Thomas W Shinder
www.isaserver.org/shinder
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: http://tinyurl.com/1llp
-----Original Message-----
From: Friese, Casey [mailto:cfriese@xxxxxxxxxxxxx]
Sent: Friday, June 06, 2003 12:08 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] SMTP Filter help
http://www.ISAserver.org
Greetings,
I'm toying around with the SMTP Application filter for the first time
and I'm picking up event logs but I'm not sure if they really indicate a
problem for my situation.
My ISA server is configured to accept POP3 connection for our sales reps
and also to Allow outbound SMTP for them to send messages. Since I've
enabled the smtp filter I'm seeing events of source SmtpEvt Unknown
commands. The commands that are being received are AUTH commands which
are usually (in my experience anyway) only used for IMAP. We don't have
any clients using IMAP (if they are, they shouldn't be).
Questions are this:
1. Is there any part of POP3 communication that uses the AUTH command
(perhaps OT) and without AUTH listed as a valid command on the filter, I
could be causing my pop clients problems?
2. If POP3 does need the AUTH command - What is the Max. Length that
should be set when adding it in as a valid smtp command on the Filter?
3. If POP3 does not need the AUTH command and someone is trying to use
it, is the connection attempt logged anywhere other than the Event
Viewer? I want to be able to see where these attempt are coming from.
Thank You,
Casey Friese
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