Ok this is a tricky one!
I'm administring a Small Business Server 2008 running virtual.
Saturday around noon it stopped receiving any external mail.
The mail is going through a spam filter with the ISP and the ISP confirmed that all the mail is stuck here!
The ISP tells me that they can not deliver to the Exchange server because it reports insuficient system resources.
When I check the SBS2008 NOTHING is wrong here and no error seems to be reported.
I can also confirm that the hardware firewall/router is correct and pointing to the correct ip.
I would really appreaciate some input :-)