So I did a DNS transfer from Network Solutions to GoDaddy. I thought I had repopulated my A records and MX records correctly. Funny thing is that now, people outside our network, get to our internal servers as they should. Email flows inbound and outbound, but with one exception: We can send to AT&T accounts and bellsouth accounts just fine. However, we cannot receive emails from these domains. I checked our SMTP filter, the emails never hit our network. What could this be?