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?
rdefinoAsked:
Who is Participating?
 
Dirk MareConnect With a Mentor Systems Engineer (Acting IT Manager)Commented:
Use test exchange connectivity..
https://testconnectivity.microsoft.com/

DirkMare
0
 
helpfinderIT ConsultantCommented:
what if you type just HELO, not HELO domain.com
0
 
rick81Commented:
Do u have a Cisco router or mail guard?
0
Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

 
R--RCommented:
Type ehlo domain.com
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
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.