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 from either of my outgoing mail servers after update

  • 5 replies
  • 3 have this problem
  • 7 views
  • Last reply by sfhowes

more options

Email works from gmail website. I've deleted and re-input the outgoing server information. Receing mail just fine. Able to send in the Gmail app just fine. Not able to send from Thunderbird on either gmail account.

Current settings; Server: smtp.gmail.com Port: 465 Username: (my full email) Authentication: Normal Password Connection Security: SSL/TLS

I've also tried using a variety of difference authentication and connection settings without luck.

Thank you, Paul

Email works from gmail website. I've deleted and re-input the outgoing server information. Receing mail just fine. Able to send in the Gmail app just fine. Not able to send from Thunderbird on either gmail account. Current settings; Server: smtp.gmail.com Port: 465 Username: (my full email) Authentication: Normal Password Connection Security: SSL/TLS I've also tried using a variety of difference authentication and connection settings without luck. Thank you, Paul

Chosen solution

Do you have some kind of program such as CCleaner that may be deleting cookies etc. from TB?

Read this answer in context 👍 0

All Replies (5)

more options

What happens if you change the authentication to OAuth2, for both the incoming and outgoing servers, and go through the steps to have Google set a token on your computer? Allow cookies for google.com and enable 'less-secure' apps.

http://kb.mozillazine.org/Using_Gmail_with_Thunderbird_and_Mozilla_Suite

more options

Thank you! That ended up working, for about 1 day, but now I've got the same problem again? Any permanent fixes?

more options

Chosen Solution

Do you have some kind of program such as CCleaner that may be deleting cookies etc. from TB?

more options

I did recently set up an VPN a couple weeks back? The OAUth2 started working again after a few toggles. Maybe it's a Tbird bug?

more options

It's possibly a clash between the VPN and TB, e.g. I recall that some VPNs require the smtp server be entered as an IP address taken from a list of 'allowed' IPs.