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

Unable to send emails since updating to 91.2.0

  • 4 replies
  • 2 have this problem
  • 23 views
  • Last reply by sfhowes

more options

Unable to send emails in Thunderbird since updating to 91.2.0 iinet have tried to help and I can send using their webmail

Error message Sending of the message failed. An error occurred while sending mail. The mail server responded: Authentication required. Please verify that your email address is correct in your account settings and try again.

Account settings SMPT Server Server name mail.iinet.net.au port 587 user name Millar there is nothing else on this page Security and authentication are not filled in.

Unable to send emails in Thunderbird since updating to 91.2.0 iinet have tried to help and I can send using their webmail Error message ''Sending of the message failed. An error occurred while sending mail. The mail server responded: Authentication required. Please verify that your email address is correct in your account settings and try again.'' Account settings SMPT Server ''Server name'' mail.iinet.net.au ''port'' 587 '' user name '' Millar there is nothing else on this page Security and authentication are not filled in.

All Replies (4)

more options

You must set the connection security to STARTTLS and the User Name to your email address:

https://help.iinet.net.au/email-setup-thunderbird

more options

Thank you for your assistance. I have now entered the connection security and user name as advised above. It still didn't work, so I contacted iinet again and they went through all the options for me, however I still get the error message when attempting to send emails. I set it to no authentication required. I am unsure of the password for my Thunderbird connection on this HP laptop. I would appreciate any further suggestions you may have.

more options

Your Thunderbird must always provide the same password you use to access webmail. Thunderbird is essentially logging in on your behalf, so it must use the same password as for iinet webmail.

more options

The error says 'authentication required', so you should set the authentication method to 'normal password', as shown in the pictures on the help page cited above.