We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Thunderbird wont send via smtp.gmail.com

  • 2 valiny
  • 1 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i colinobj

colinobj
colinobj
more options

I have Thunderbird 52.9.1 running on Win10 Home.

Some time between 4am and 9am while I was in bed, Thunderbird stopped being able to send messages via smtp.gmail.com. It could receive messages from either of my two accounts, and it will send messages via my other account.

Ive tried Tbird safe mode, restarting the PC and the router and ive tried with AV and firewall disabled.

My default outgoing server shows: server name smtp.gmail.com port 465 my full gmail address authentication method OAuth2 Connection Security None

Getting desperate!

I have Thunderbird 52.9.1 running on Win10 Home. Some time between 4am and 9am while I was in bed, Thunderbird stopped being able to send messages via smtp.gmail.com. It could receive messages from either of my two accounts, and it will send messages via my other account. Ive tried Tbird safe mode, restarting the PC and the router and ive tried with AV and firewall disabled. My default outgoing server shows: server name smtp.gmail.com port 465 my full gmail address authentication method OAuth2 Connection Security None Getting desperate!
Sarin'efijery napaingotra

Vahaolana nofidina

re :My default outgoing server shows: server name smtp.gmail.com port 465 my full gmail address authentication method OAuth2 Connection Security None

right click on gmail mail account in Folder Pane and select 'Settings' At bottom of left Pane, click on 'Outgoing server SMTP' a list of server will appear ont he left side.

It will show details in lower section.

  • Locate the one which says 'Connection Security' : none
  • click on 'Edit'
  • change the 'Connection Security' : to SSL/TLS
  • click on 'OK'
  • click on 'OK'

Exit thunderbird. Allow a little time for background processes to complete. Start Thunderbird.

Test sending.

Hamaky an'ity valiny ity @ sehatra 👍 1

All Replies (2)

Toad-Hall
Toad-Hall
  • Top 25 Contributor
more options

Vahaolana Nofidina

re :My default outgoing server shows: server name smtp.gmail.com port 465 my full gmail address authentication method OAuth2 Connection Security None

right click on gmail mail account in Folder Pane and select 'Settings' At bottom of left Pane, click on 'Outgoing server SMTP' a list of server will appear ont he left side.

It will show details in lower section.

  • Locate the one which says 'Connection Security' : none
  • click on 'Edit'
  • change the 'Connection Security' : to SSL/TLS
  • click on 'OK'
  • click on 'OK'

Exit thunderbird. Allow a little time for background processes to complete. Start Thunderbird.

Test sending.

colinobj
colinobj Tompon'ny fanontaniana
more options

Thanks Toad-Hall. That worked.