Originally Posted by benbalbo
Well I'm not sure why, but this domain is still marked as using an external mail server, but it keeps getting added to the local-host-names file. I'm starting to look into why, but if anyone has any ideas, I'd appreciate them.
Do you have more the one web (subdomains) of this domain? Then please check all of these wbstes if they cotain this domain as co-domain and set these co-domaibs to external too.