Exchage 2003 email rejected to some domains.
Posted on 2004-08-19
HELP! This is a new installation of Exchange 2003. I can receive email from the internet, and can send it anywhere from a OWA. HOWEVER when I try to send email from Outlook some goes through and some bounces back with Undeliverable #5.5.0 smtp;550.
To fix I have tried the following:
1. I set up the internal dns entry for mail.company.com with the public IP address and set up the mx mail.company.com.
2. I also ran the Exchange System Manager, Internet Email Wizard and I get an error: To send internet email the selected server cannot be a bridgehead server ID no: c103b530 Exchange System Manager.
Our IP was previously used as a relay but I am working on correcting that now.
What I don't understand is why it works with exchange OWA without problem, and fails to some domains when using outlook. It is the same server!