I can't send emails from by PC or phone (but only when is connected to Wifi).
I use outlook on my PC for my emails and I just get a pop up asking for me to enter my username and password, both of which are already input and correct.
I've run a check and got a OPM log and that gives the following
<rx> 525 5.7.13 Authentication Denied (VM305)
Can someone help please?