telnet to port 25

wplantier · ‎11-26-2008

Through our ASA we can telnet to a email server but get 500 5.5.1 Command unrecognized: "XXXX" when we try to use the commands. Any help would be appreciated.

Thanks.

sachinraja · ‎11-26-2008

Hello spencer

You might really not have the right access for it.. ASA works on layer 3/4 and allows a packet on port 25. but as it hits the server , your communication is on layer 7 and the application decides what you have to do ! So, this is more to do with Application. If you can telnet to port 25 and till you arent timed out, I do not see this as a network issue

Hope this helps..

Raj

cisco24x7 · ‎11-26-2008

"no fixup protocol smtp 25" and your mail will

work. It is a known issue with ASA/Pix and

mail

vladrac-ccna · ‎11-26-2008

Depends on the version.

http://www.cisco.com/en/US/docs/security/asa/asa80/configuration/guide/inspect.html#wp1224614

Regards,

Vlad