I'm trying to figure out why I can't email a few folks at various army.mil addresses. some are at usarec.army.mil and some are at us.army.mil, etc. I can email marines, navy, army corps of engineers and even secretary of defense addresses. But for some reason, I can't send anything to the army.
gmail works fine, just from my exchange 2007 server, I have issues. And only with the army.mil server.
I checked mxtoolbox.com and my server isn't listed.
I get a delay after 4 hours, then a failure the next day.
I'm thinking it's a dns issue?