An email address that I previously successfully sent emails to is now rejecting with the message:
Reason: This is the mail system at host know-smtprelay-7-imp.
I am sorry to have to inform you that your message, "Hi", has not yet been delivered to xxxx.xxxxxxxx@tiscali.co.uk.
The messages has yet to be delivered due to the following error:??
Socket error: Connection error
This is very stressful as it's for an elderly relative that I need to support. Can someone tell me how to fix this?