If all devices are on the same network then confirm your email client's SMTP settings are correct otherwise, on your desktop device, open a Command Shell window and enter the following where username:password is replaced with your email address and password, i.e. email@example.com:Y54kpX5g:
curl -v smtps://smtp.virginmedia.com -u username:password
Do not post the resulting output here but instead review it for possible reported causes and then post just the redacted part here or the VM error code.
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