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

Cannot send messages out ?

  • 1 ŋuɖoɖo
  • 1 masɔmasɔ sia le esi
  • 36 views
  • Nuɖoɖo mlɔetɔ Toad-Hall

more options

My email progam was working until now I cannot send messages and I get the below message - How do I fix it please ? Sending of the message failed. An error occurred while sending mail. The mail server responded: VCcronZ8PLF4q Authentication Required (TT401). Please verify that your email address is correct in your account settings and try again. I have checked its the correct email address etc ?

My email progam was working until now I cannot send messages and I get the below message - How do I fix it please ? '''Sending of the message failed. An error occurred while sending mail. The mail server responded: VCcronZ8PLF4q Authentication Required (TT401). Please verify that your email address is correct in your account settings and try again. ''' I have checked its the correct email address etc ?

All Replies (1)

more options

You need to supply info regarding the smtp server settings.

Authentication problem could be the user name or the password used with that user name or the Connection Security type selected or the type of Authtication Methosd you have selected or the account is not using the correct smtp server. You only need one to be wrong and it all fails.

Menu icon > Account Settings Bottom left pane click on 'Outgoing Server (SMTP)' Select the smtp server which is specifically set up for the problem account email address. The User name will say full email address of that account. Post image showing details.