troubleshooting Question

Server disconnects when getting bSMTP-mail

Avatar of p_sie
p_sieFlag for Netherlands asked on
Exchange
17 Comments2 Solutions494 ViewsLast Modified:
Hi experts,

I have the following situation:
Exchange2000 which will fetch the mail from a bSMTP-server somewhere else.
It was all working fine, till a month ago, then a lot of emails were not arriving at our server.
I called with the ISP and other people, and I narrowed the problem to the following:

When I telnet the server from the local network at port 25, I get the expected reaction like 'ESMTP Exchange Microsoft.......'
But when I telnet the server on port 25 from the internet, then the server disconnects the telnet session in half a second.

When I do above for port 110 (POP3) there is no problem. I removed all the rules in the firewall.
Sometimes an email will arrive...

Please help me, cause all my colleagues are complaining about this problem

Greetings,

P_sie
Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 2 Answers and 17 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 2 Answers and 17 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros