Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Solved

unable to send messages after upgrade

college

After your upgrade I was unable to send messages. The incoming I was able to fix but the outgoing I could not fix. I have included the email message sent to me and I have included a picture of the outgoing STMP,

After your upgrade I was unable to send messages. The incoming I was able to fix but the outgoing I could not fix. I have included the email message sent to me and I have included a picture of the outgoing STMP,
Nseta ihuenyo ndị agbakwunyere
Gụọ azịza a na nghọta

Asịsa Ahọpụtara

Similar symtoms, but a different problems. I am unfamiliar with btinternet, but I suggest changing port to 465 and security to SSL/TTLS and see if that works.

All Replies (5)

For the SMTP server settings, I suggest using the email address for user name and changing security to STARTTLS . I also suggest checking to ensure that this SMTP setting is linked to the account

I have the same problem Screenshot attached

Asịsa Ahọpụtara

Similar symtoms, but a different problems. I am unfamiliar with btinternet, but I suggest changing port to 465 and security to SSL/TTLS and see if that works.

It turned out that Thunderbird was operating under a different password to btinternets online email password, it was using an older password, dont ask me how that happened as I have no clue!

I have this problem too - it started today. I can receive emails but not send. I'm on Virgin - I can send using their in-house browser, but not using Firefox. The error message I get is:-

Jụọ ajụjụ

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.