I am experiencing an issue with my Exchange 2010 server. After a migration from Exchange 2003 to 2010, Exchange 2010 had been happily sending and receiving mail for over a month. In the last two days it began having issues. I have made a few changes and seen mail sporadically show on all OWA/Outlook clients. Moving on to the results I have right now:
If I send a test message from GMail to a user on Exchange 2010 - it reports as being received. However, in OWA and on an Outlook 2007 client the message does not appear.
Where do I start? I will happily provide any information you need to assist in the matter quickly, and offer beer to anyone locally :)