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.

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

This thread was archived. Please ask a new question if you need help.

"Mailbox Unavailable" error

  • 2 பதிலளிப்புகள்
  • 3 இந்த பிரச்னைகள் உள்ளது
  • 11 views
  • Last reply by RMYE

RMYE
RMYE
more options

I have two AOL/Verizon email addresses in my Mozilla Thunderbird email system. They have identical server settings. One of the addresses works fine, but oddly I get the following error message when I try to send email using the other address:

“An error occurred while sending mail. The mail server responded: Request failed; Mailbox unavailable. Please verify that your email address is correct in your account settings and try again.”

I have two AOL/Verizon email addresses in my Mozilla Thunderbird email system. They have identical server settings. One of the addresses works fine, but oddly I get the following error message when I try to send email using the other address: “An error occurred while sending mail. The mail server responded: Request failed; Mailbox unavailable. Please verify that your email address is correct in your account settings and try again.”

All Replies (2)

sfhowes
sfhowes
  • Top 10 Contributor
more options

Open Tools/Account Settings, select the problem account in the left pane, then Outgoing Server (SMTP) in the lower right pane. Is the selected smtp server the one that uses the User name and password of the selected account, or is it pointing to the smtp server of the other account? Many services require each account to send on the smtp server that uses the account's credentials, even if all the accounts are with the same provider.

RMYE
RMYE கேள்வியின் உரிமையாளர்
more options

That did the trick, thanks so much!