Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Email issues

  • 4 பதிலளிப்புகள்
  • 1 இந்த பிரச்சனை உள்ளது
  • 3 views
  • Last reply by Cal Haines

Hello, my Cox email account was migrated to Yahoo mail. I can receive emails but now I can't send emails from Thunderbird. I've triple checked server settings. Please help. Thanks-Vince

This is the message I get and it does this with all email addresses.


Sending of the message failed. 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.

Hello, my Cox email account was migrated to Yahoo mail. I can receive emails but now I can't send emails from Thunderbird. I've triple checked server settings. Please help. Thanks-Vince This is the message I get and it does this with all email addresses. Sending of the message failed. 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 (4)

Have you actually checked the settings in outgoing server (SMTP) in account settings or only those in the incoming account. My guess is you have not and are still sending to the Cox server.

Helpful?

All server settings were correct. Problem was User names didn't match. Once corrected it was fixed.

Helpful?

I have the same problem. I have two @cox.net accounts. One is working for sending and receiving, the other will only receive. When I try to send with the second account, I get the same "Mailbox unavailable" error reported above.

Here are my SMPT server settings for the account with the problem (they are the same as the working account):

Description: Yahoo mail Server Name: smtp.mail.yahoo.com

Port: 465 Connection security: SSS/TLS Authentication method: OAuth2

Thanks in advance.

Helpful?

More information: After reading this thread: https://support.mozilla.org/en-US/questions/1387237 I verified that my problem is that the "User Name" field in the SMTP dialog has to be the same as the e-mail address. (This is probably a Yahoo mail thing.) The problem (as mentioned in the above thread), is if I change the user name in one account, it changes in the other SMTP dialog as well. So I have to go into the SMTP dialog every time I want to change to sending using the other account.

In this thread: https://support.mozilla.org/en-US/questions/1447737 The user talks about creating "a different SMTP server name for each account." Unfortunately, I have no idea how to do that and the user doesn't say.

Any assistance would be welcome.

Helpful?

கேள்வி எழுப்பு

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