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wplantier
Beginner

telnet to port 25

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.

3 REPLIES 3
sachinraja
Engager

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
Frequent Contributor

"no fixup protocol smtp 25" and your mail will

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

mail

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