In the off chance that Dustin Prudhom sees this, I've tried to answer your question but AT&T is awful at mail server admin and they're blocking both of my mail servers for absolutely no good reason. I'll try again if they fix whatever their issue is (they say 24-48 hours), but otherwise please try asking again from an email address associated with a mail provider that's not utter garbage.
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(AT&T can be pretty terrible at Internet period. I dropped them at home after they couldn't manage to get my Internet connection back up within a week)
