I have always sent my e-mails using Outlook. I have suddenly been getting error messages when I send ti btinternet addresses. The messages says "
Reason: The following message to **********@btinternet.com was undeliverable.The reason for the problem: Maximum Retry Queue Age Reached.
I can receive messages from btinternet but my replies do not reach them. This issue has only just started. I have previously had no problems with this address. Please help!!!