Quote Originally Posted by mmolczan View Post
Unfortunately I am not just missing an email or two in this instance. Email flows fine for about 30 minutes and then all mail flow just stops. Then occasionally some mail will come through but be 2-3 hours behind when it was sent.
Without any data of why the emails are stopping, the forum will be just wild guessing. Again, do you have TLS allow enabled? When the email stops, I suggest running tcpdump on ports 25 on the Untangle to see if email is arriving and what type of email is not making it through the Untangle.