This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

I am sending emails to specific people, but I always get a bounce back for an email who is NOT in the recipient list. Error 550

  • 3 amsoshi
  • 1 yana da wannan matsala
  • 5 views
  • Amsa ta ƙarshe daga cward247

more options

I am sending emails to specific people, but I always get a bounce back for an email who is NOT in the recipient list. I get error 550, where is this email address hiding? This has been bugging me for a couple of weeks. I have ran virus and malware scans but everything comes back fine. I read it could be hidden in an undisclosed part of the email system so I turned this off (Options > Advanced > Config Editor > mail.compose.add_undicolsed_receipients > changed value to false) If I send myself an email with ONLY my address in the reciepient box, I still get this other account bounce back even though its not addressed to them. PLEASE HELP!

I am sending emails to specific people, but I always get a bounce back for an email who is NOT in the recipient list. I get error 550, where is this email address hiding? This has been bugging me for a couple of weeks. I have ran virus and malware scans but everything comes back fine. I read it could be hidden in an undisclosed part of the email system so I turned this off (Options > Advanced > Config Editor > mail.compose.add_undicolsed_receipients > changed value to false) If I send myself an email with ONLY my address in the reciepient box, I still get this other account bounce back even though its not addressed to them. PLEASE HELP!

An gyara daga Balázs Meskó

Mafitar da aka zaɓa

This is a server side issue, and usually it means that one of the recipient addresses does not exist. In your case, this isn't the problem, so it must be something else. However this has nothing to with Thunderbird itself, so you have to contact your system administrator.

Karanta wannan amsa a matsayinta 👍 0

All Replies (3)

more options

Zaɓi Mafita

This is a server side issue, and usually it means that one of the recipient addresses does not exist. In your case, this isn't the problem, so it must be something else. However this has nothing to with Thunderbird itself, so you have to contact your system administrator.

An gyara daga Balázs Meskó

more options

Hi, thanks for getting back to me. Are there any settings within thunderbird that maybe setup to automatically forward any sent mail to this address that keeps bouncing back?

more options

Hi! Thanks again for your help. I have logged into my webmail (talktalk) and sure enough, in the settings there is an 'auto forward' option which had been enabled [somehow], I have disabled it and I no longer get bounce back emails.

Hope this helps someone.