We have rarely and itermitently had issues with email not being delivered. After running the Microsoft Exchange Best Practices Analyzer tool on our Small Business Server, it says the following regarding DNS:
The 'Host' (A) record for server ServerName.OurDomain.local cannot be retrieved from DNS server 'XXX.XXX.XXX.XXX'. This can cause message routing delays and other service failures. Verify that the DNS server is online and that the 'Host' record is present.
The Ip Address in the X's is a Dual WAN Dlink Router. Could this pose an issue? How can I resolve it if it is an issue?