Due to changes at our ISP I've just had to alter Exchange to use DNS for
outgoing mail - as a result I had to addd the predefined DNS Lookup
filter to make it work.
Currently it is set to "Both" directions and our ISP's default DNS
Do I need "Both" or can I set it to "Out"?
Should I set it to "Any Host" (as our ISP has two DNS IPs)?