Can receive but not send emails following change of password on BT

7ch100le wrote:

My BT email was hacked. BT shut the account down and fixed the problem. I therefore needed to change my password. since then, I can send and receive emails on the BT website but while I can receive emails, I can’t send them.

I have 4 Apple devices and the problem is on all of them. Different error message on each device but all on the following lines. “The SMTP server, mail.btinternet.com is not responding. Check your network connection and that you entered the correct information in the Outgoing Mail Server field”.

When I and various Apple engineers go into mail accounts, the outgoing server is SMTP but unlike the incoming server part, there is no further information, no server settings drop down list and no possibility of editing in any way. I did manage to add the the Primary Server in the outgoing SMTP server, previously blank, as mail.btinternet.com, sent an email and got the following error message: the sender address was invalid.

Apple asked me to ask BT for host names etc - they were startled and gave me a list of port numbers etc. I have yet to get back to aApple and go through the whole thing again.

Any suggestions, please?

This is BT issue since they are saying your password is wrong, you need to work it out with them.