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.

cannot send emails

  • 1 reply
  • 0 have this problem
  • 1 view
  • Last reply by Toad-Hall

alv7722
alv7722
more options

I cannot get emails to send from Thunderbird. I have to copy to Outlook to be able to send.

Sending of the message failed. An error occurred while sending mail. The mail server responded: Client not authenticated to send mail. [MW4PR04CA0246.namprd04.prod.outlook.com 2024-03-01T04:29:11.388Z 08DC38FAF1647BFB]. Please verify that your email address is correct in your account settings and try again.

I cannot get emails to send from Thunderbird. I have to copy to Outlook to be able to send. Sending of the message failed. An error occurred while sending mail. The mail server responded: Client not authenticated to send mail. [MW4PR04CA0246.namprd04.prod.outlook.com 2024-03-01T04:29:11.388Z 08DC38FAF1647BFB]. Please verify that your email address is correct in your account settings and try again.

All Replies (1)

Toad-Hall
Toad-Hall
  • Top 10 Contributor
more options

What server settings are you using for the outgoing smtp?

  • Account Settings
  • Left pane scroll to bottom and clickon 'Outgoing Server (SMTP)'
  • You should see a list on the right of all outgoing servers.
  • Select the one used for account and click on 'Edit'
  • Please post an image of outgoing server settings.

Do you have more than one account using outlook server. ? In Thunderbird

  • Help > Troubleshooting Information
  • Scroll down to 'Mail and News Accounts' section
  • Copy all that section and paste into t his question OR post an image showing the info.