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 <http://www.isaserver.org/> ------------------------------------------------------- Dan, Are you running McAfee or any other virus scanner on the server from where telnet originates? Regards, Raj >This note and any attachments may contain Infineum confidential information. If you are an unintended recipient: (i) place no reliance on the information contained herein; (ii) do not disclose, distribute, or duplicate any information from this note; and (iii) please contact the sender. > > -----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 <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 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. 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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.