Outgoing SMPT mail "Failed to connect to SMTP host"

Notes/Domino 8 Forum

Subject: Outgoing SMPT mail "Failed to connect to SMTP host"

Feedback Type: Problem

Product Area: Domino Server

Technical Area: Administration

Platform: Windows 2003 server

Release: 8.0.1

Reproducible: Always

I've posted a reply to a thread that goes back to April 08. Wanted to start a new thread so that other experts in this area might be able to respond.

I set up an 8.0.1 mail server a few weeks ago and have been experiencing difficulties sending outbound SMTP mail. A lot of SMTP mail is successfully routing, but it appears that at least 50% is not. Always seems to be the same domains. A TraceRT from the server suggests these domains should be deliverable. I've been working with both my ISP and the recipients mail admins to figure out where long the way the message is being blocked. Our new mail server's IP address does not appear to be on any blacklists.

Any help would be appreciated.

Here is a link to the original thread:
http://www-10.lotus.com/ldd/nd8forum.nsf/ShowMyTopicsAllFlatweb/6c2ce4a7aa472c9d85257495004a8f43?OpenDocument

Feedback number WEBB7GZJ66 created by ~Zelda Breresamanettu on 07/29/2008