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Virgin mail stuck in Outbox Error Message

On our wavelength


My outgoing Virgin mails have been stuck in Outbox with the following error messages:

Task ' - Sending' reported error (0x800CCC0F) : 'The connection to the server was interrupted. If this problem continues, contact your server administrator or Internet service provider (ISP).'

Task ' - Sending' reported error (0x800CCC67) : ' The server responded: 421 Virgin Media has blocked your connecting IP Too many bad emails have been sent. Visit Section: Email Sending Errors to request delisting'


Forum Team
Forum Team

Hi Wing,

Thanks for posting on our community forums. We apologise your currently have issues with your email stuck in your outbox.

I have looked through our other community post and found a similar thread to yours which may be useful to you.

Please check the link here

If you still need further assistance after following the steps in the link, please pop back here.

Kind regards Jodi. 

On our wavelength

The problem is on my desktop. I use Outlook 365. The other thing I found out my settings were all OK and not changed, was when I went into Accounts Settings/Server Settings/Outgoing Mail and clicked Next I got the following message:

"Something went wrong and Outlook couldn't save your account settings. Please try again."

I have not made any changes to Accounts Settings at all. Could be Microsoft have now removed their Mail App after a Windows 10 Update ?

I have no problem logging into My Virgin Media via the Web and composing and sending Virgin mails from there. 

One solution I read was remove my primary email account and re-add again. I wonder whether that works.


On our wavelength

Based on the (0x800CCCF) and (0x800CCC67) error messages it seems my IP address was blacklisted  on a  for sending spams which I didn't. I have contacted Virgin's support test on 150 on the above issue and gave the first agent  the error codes. I was passed from one tech agent to another. Finally, the last one I got talked about a charging for resolving the issue.  Couldn't they just delist my IP from the blacklist if it is actually the case ?

I have no issue receiving mail on Outlook on my desktop. I can only use Virgin's webmail app to send mail. This issue started only yesterday. 

Any help from  Virgin Community readers will be appreciated.

On our wavelength

Got it sorted. I logged into filled in a form detailing the error codes and messages and had my blacklisted IP unblocked within 48 hours.