Yes I have. It seems to be only happening on Wi-Fi. I have Wi-Fi at work and it also cannot retrieve emails. Only when I turn off Wi-Fi the email works on 4G. This is happening in both native email program and third party email programs. It is also happening on Gmail too.
I had seen that the correct answer in the link I sent you had helped many people with the same issue you have. Did it not work for you?
Yes, thank you. I had to enter the ip addresses of both incoming and outgoing email and it worked. Will there be a fix in the future?