Ran into a problem here. I have an SBS2008 Server. Installing new Outlook 2010 clients and was getting some certificate errors. Went to MS and found a KB Article on how to fix it (940726). anyway it was asking to make some changes in the Exchange Management Shell which i did.
Now the problem has occurred where we cannot receive external email anymore. It's bouncing back to the sender. What I have notice is this organization has 2 MX records (mail. and mail1.) They use the mail1.domain.org (not sure why there is 2 but the mail.domain.org doesn't even point to the correct external IP). But now all the incoming emails are not going to mail.domain.org rather then mail1.domain.org? I did not make any changes to the external MX Record with the DNS host so it has to be something I think that I made a change on with the SBS2008/Exchange 2007 server. How can I change it back or what commands in the Management shell do I need to change my external mail record from back to mail1 rather than mail?