All my e-mails I send to one recipient are failing to be delivered. It is somebody I e-mail a lot and there was no problem until about 3 weeks ago. It is not occurring with anybody else.
As far as I know I did not press anything by mistake to cause this to happen. I used to pick his address by entering the first character etc in the "To" box using "Compose".
I have tried editing my address book by both retyping the e-mail address and by clicking on his address in e-mails he has sent me.
Is this a problem at the senders end or the recipients? What do we due to correct either?
It is a talktalk address and he views e-mails on both a PC and an iPhone and possibly a tablet. I just use my PC.
See this -