Can you post the server and port settings without revealing your email address so the other community members can compare with their information and then be able to give you suggestions based on that information?
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
After trouble shooting with Verizon and Comcast technical support we were able to correct the issue.
The outgoing servicer port for Comcast should be set at 465 and for some strange reason (trial by error) we turned off "other SMTP Servers. that seemed to have corrected the issue.