I hope I explain this properly.
Currently we have an outside provider handling our business email, and they have its set up on their end to point to our exchange server. This was setup before I came along.
To setup external email for someone that has a local mailbox; I create an email address for the user on the Providers web interface and then add the email address to their mailbox. Our exchange server (Exchange 2007), authenticates their local domain password back to our Pop email provider. This allows the user to be able to log in to the providers spam web page and check any spam email that has been blocked.
My issue is: We setup an additional Pop email with a different domain name with the same provider. They of coarse setup everything on their end and pointed to our exchange server. Then they created an email for me so that I can log into their spam website and create more email addresses.
I added the new domain as a new Accepted domain, and there is already a Send connecter setup to point to their Server. I can now send and receive email with the new domain name just fine with the users mailbox I added the external email address to.
The problem is that its not authenticating the password for that user back the providers server so that I can login the their spam website. This works just fine with the other email domain that was already setup.
My question is; what am I missing with setting this up? I'm not sure what else I'm supposed to do.