By now Nero Support has received dozens of emails sent by customers from email addresses like "outlook_[long series of letters and numbers]@outlook.com". When Nero Support replies to these email addresses, the email delivery always fails.

This is a known issue of Outlook for Windows.


If you are using Outlook for Windows, please refer to the workaround in below articleand send your email to Nero Support:


https://support.office.com/en-us/article/outlook-com-email-account-appears-as-outlook-long-series-of-letters-and-numbers-outlook-com-in-outlook-for-windows-90ed7938-7f21-4cb5-a69d-a3b79ea4eafd?ui=en-US&rs=en-US&ad=US


Thanks!