550 5.1.2 Recipient Domain Invalid (VM521)

[andygkennedy]

Emails to domain lythgoe.net sent today are bouncing with error:
Server error: '550 5.1.2 Recipient Domain Invalid (VM521)'

Emails sent to that domain from a different email service are not bouncing.

Can someone please check and unblock asap. 

[用心棒]

Virgin Media's DNS was failing to find the domain (even a few minutes ago) but that seems to no longer be the case. Can you confirm that by resending one of the earlier failed emails?

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[andygkennedy]

Have tried resending, awaiting results - thank you

[andygkennedy]

Nope, bounced again at 17:48 😞

[用心棒 · Accepted solution]

Sorry to read that. Issue has been flagged to the forum team however be aware it can  take them a few hours / days to respond. Whilst waiting do consider periodically retrying a failed email as the issue might resolve itself.

[Paul_DN]

Hi andygkennedy,

Thank you for reaching back out to us, so I can help further and send this to our Internet Security team, I will send you an invite into a private chat so I can take some further information, once received please click on the purple envelope to accept.

Regards

Paul.