Dan,

Not sure about Norton. But we had a server with McAfee enterprise. McAfee has a setting to prevent certain applications from opening an SMTP connection using port 25. It allows only well known email applications to open port 25 for SMTP, such as,

 

agent.exe, amgrsrvc.exe, apache.exe, ebs.exe, eudora.exe, explorer.exe, firefox.exe, firesvc.exe, iexplore.exe, inetinfo.exe, mailscan.exe, MAPISP32.exe, modulewrapper*, mozilla.exe, msexcimc.exe, msimn.exe, mskdetct.exe, msksrvr.exe, msn6.exe, msnmsgr.exe, neo20.exe, netscp.exe, nlnotes.exe, nrouter.exe, nsmtp.exe, ntaskldr.exe, opera.exe, outlook.exe, Owstimer.exe, pine.exe, poco.exe, RESRCMON.EXE, rpcserv.exe, SPSNotific*, thebat.exe, thunde*.exe, tomcat.exe, tomcat5.exe, tomcat5w.exe, VMIMB.EXE, webproxy.exe, WinMail.exe, winpm-32.exe

 

All other applications are blocked as "mass mailers". I had to add telnet.exe manually to the exception for the telnet a.b.c.d 25 to work.

 

Check if Norton does something similar.

 

 

 

Regards,

Raj

---

From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Dan Crain
Sent: Wednesday, September 26, 2007 3:56 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: Telnet question

Sorry, been working on some other small issues too.....I have Norton Enterprise edition on all my machines....

---

From: isalist-bounce@xxxxxxxxxxxxx on behalf of Periyasamy, Raj
Sent: Wed 9/26/2007 1:32 PM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Re: Telnet question

http://www.ISAserver.org
-------------------------------------------------------
 
Dan,
Are you running McAfee or any other virus scanner on the server from
where telnet originates?


Regards,
Raj

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-----Original Message-----
From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
On Behalf Of Dan Crain
Sent: Wednesday, September 26, 2007 9:18 AM
To: isalist@xxxxxxxxxxxxx
Subject: [isalist] Telnet question

http://www.ISAserver.org
-------------------------------------------------------
 
Simple question for the pros...
I'm running ISA 2004.
Does it automatically block a telnet session. I'm having an issue
connecting to this one particular domain with my exchange server and
needed to do a telnet session with it but can't get connected with it
inside the firewall. Port 25 is open on the firewall and from home I can
telnet to my server and the offending server.

Do I have something configured wrong on the firewall?
Let me know what you think.
Thanks,
Dan Crain

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NOTE: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this message in error, please notify Dan Crain at DanC@xxxxxxxxxxxx immediately by replying to the message and deleting it from your computer. Thank you.