In December 2024, Virgin Media advised me that my Virgin Media Mail account may have been locked as a security precaution. I was asked to follow the steps given which unlocked it and so was able to use that address again from the Virgin Website but not from Thunderbird. However, I was then given codes and a new password to re-activate the email address on Thunderbird. After a lot of effort trying with the codes given, I can now view all emails on Thunderbird sent and received from that email address but I still cannot send any emails from Thunderbird. Virgin gave me the following instructions for SMTP settings: Host name: smtp.virginmedia.com Username: your full Virgin Media email address Password: your Virgin Media email app password SSL encryption: Enabled Port: 465 (this might not be selected automating by enabling SSL, so please check) Authentication: Password Some of the options for "Connection Security" and "Authentication Method" in the Account Settings tab for the SMTP do not exactly relate to the details given by Virgin. I have tried various combinations of options but to no avail. Can anyone advise me how to get round this problem?