Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Solved

Sending of the message failed. An error occurred while sending mail. The mail server responded: Sender address rejected: not owned by user Please check the message recipient "christine.krieger@a1.net" and try again.

Thunderbird Send and receive email
david replied 3 herinandro lasa
emillevine
emillevine

Sending of the message failed. An error occurred while sending mail. The mail server responded: <anonymous@[10.0.0.31]>: Sender address rejected: not owned by user a1.914306843. Please check the message recipient "christine.krieger@a1.net" and try again.

why do I get this on new download

Sending of the message failed. An error occurred while sending mail. The mail server responded: <anonymous@[10.0.0.31]>: Sender address rejected: not owned by user a1.914306843. Please check the message recipient "christine.krieger@a1.net" and try again. why do I get this on new download

All Replies (1)

david
david
  • Mpandray Anjara 10 Voalohany

Vahaolana Nofidina

If you post screenshots of your server settings pane and your SMTP server settings pane, that may help someone here to make suggestions. thank you

Mametraha fanontaniana

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.