01-26-2013 09:40 AM
01-26-2013 10:22 AM - edited 01-26-2013 10:23 AM
not sure who your 3g provider is, but when on Wifi, you are on the VZ network, and VZ blocks outgoing port 25 for email servers and spam protection. So check your settings and the server port numbers, and make sure you are using the following.
Your 3g Provider may not block that port where the Verizon ISP does.
01-26-2013 10:27 AM
01-26-2013 10:32 AM
try smtp outgoing port 465 and check both boxes, if that doesn't work then check with your it dept.