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How to test smtp on exchange 2007

I have a 2007 exchange server and I need to test smtp.

I tried using telnet to mailserver.domain.com 25 and I get the 220*************

but when I type helo domain.com I get 503 unrecognized command.

How to test smtp through telnet?
0
rdefino
Asked:
rdefino
1 Solution
 
helpfinderCommented:
what if you type just HELO, not HELO domain.com
0
 
rick81Commented:
Do u have a Cisco router or mail guard?
0
 
R--RCommented:
Type ehlo domain.com
0
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Dirk MareSystems Engineer (Acting IT Manager)Commented:
Use test exchange connectivity..
https://testconnectivity.microsoft.com/

DirkMare
0
 
Arjun VyavahareTechnical ConsultantCommented:
Hi,

That is usually caused by something getting in the way and blocking the traffic. AV, Firewall scanning SMTP traffic, try to disable Antivirus on exchange server and perform telnet.

and also there is one more tool available to check SMTP settings using Microsoft exchange Connectivity:

https://testconnectivity.microsoft.com/

Regards,
Arjun
0
 
Simon Butler (Sembee)ConsultantCommented:
That is classic Cisco ASA device.
http://support.microsoft.com/kb/320027

You need to disable the SMTP scanning functionality on the firewall.

Simon
0

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