Hi,
If you're unable to send email through your mail client at the moment, and are receiving a message that says Authentication Credentials Invalid (VM300) could you please try changing your password for that address in My Virgin Media.
We're keen to see if this helps at all after we've carried out some work on the problem. Once you've updated the password, you'll need to update it in your mail client as well.
If the password change DOESN'T work, please post below to let us know. Please provide the following:
- Error Message seen in your mail client
- Timestamp of the error
If your issue isn't related to a password error when sending email, please post a new thread so the Forum Team can look into things for you.
