A previous Networkin Admin setup Exchange Server 2010 in addition to the Exchange Server 2003 that was already in place. I want to get rid of the Exchange Server 2003 and was working on steps to removing it using msexchange.org. I followed all steps and got to the point where I was deleting the routing group connectors on the 2003 box. As soon as I deleted the Routing Group Connector from the First Administrative Group, I was unable to get mail from the outside. Also, I was able to receive mail to the outside and have everything work internally without issue though.
Does anyone have idea what I could be missing? Thanks in advance for your help!