Hyper V host contains:
1 Exchange 2013
When you send email it sends it as server.domain.local
External DNS has an A record going to the IP setup as mx.domain.com
MX is the A record
I've checked the send connector and verified its sending out as mx.domain.com. I'm fairly certain i've not checked something simple and that's whats causing this. Right now the ultimate problem is we're being rejected at some hosts as spam despite having and SPF record...i'm thinking its because of what's mentioned above (plus, its just bad mojo to have that out in the world anyways).