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

Thunderbird - Second email not sending

  • 5 replies
  • 1 has this problem
  • 1 view
  • Last reply by david

more options

I added a second email account to my Thunderbird. It receives emails just fine, but it doesn't allow me to send emails. It keeps on giving the error message 'Sender address rejected: not owned by user ...' I even made the second email the (Default) in my Outgoing Server settings, but I still get the same error message. Any help will be apricated.

I added a second email account to my Thunderbird. It receives emails just fine, but it doesn't allow me to send emails. It keeps on giving the error message 'Sender address rejected: not owned by user ...' I even made the second email the (Default) in my Outgoing Server settings, but I still get the same error message. Any help will be apricated.

Chosen solution

I'm pleased it's now working. Please mark this topic closed to remove it from open issues. Thanks.

Read this answer in context 👍 0

All Replies (5)

more options

Do you have separate SMTP servers defined for each account. You can check that at tools>account settings and scroll down left pane to Outgoing Servers (SMTP).

more options

Hi David. No, I don't think so. I basically copied my default emails settings. The only thing that is different is the Username, there I put the new email address. How do I define a separate SMTP servers for each account?

more options

You create it at the pane for Outgoing Servers (SMTP). And then you attach it to an account at tools>account settings>account

more options

I got it working, thanks for your help :)

more options

Chosen Solution

I'm pleased it's now working. Please mark this topic closed to remove it from open issues. Thanks.