On 17/12/2019 10:05, Broadback wrote:
I recently switched from Plus net to BT. I have my own domain so that
when I move internet supplier I can keep the same email addresses. This
has worked fine in the past but now BT will not let me communicate with
Hotmail addresses. Why, and is there a way around this problem?

Why are you using BT at all?
Use PlusNets smtp relay for outgoing.
= smtp.plus.net

--
"And if the blind lead the blind, both shall fall into the ditch".

Gospel of St. Mathew 15:14