Cannot send from Outlook 365 Using BT Yahoo Mail Account

[gg30340]

As a comparison I have used the following settings when I set up Outlook

Your Name

Email address: Full btinternet email address

Account type: IMAP

Incoming server: mail.btinternet.com  

Outgoing server: mail.btinternet.com

Logon information:

User name: prefix only of email address (others have said they need the full email address)

Password: Email password

Tick remember password

Do not tick Require password auth (SPA)

Click Button More settings

Tick box my out going server requires authentication

Tick box use same as incoming

Do not tick log onto incoming server

Advanced Button

Incoming server 993 Tick requires SSL

Outgoing server 465 Use following type encryption SSL

[jonnohudski]

So, having found a workaround (using no encryption, which isn't ideal) i am now in the predicament of Outlook automatically switching back to the other settings (which still don't work).

Has anyone else had any idea as to why SSL/TLS does not work? It tests fine when i press the check settings button, but just doesn't send the e-mail and we get the same old 0x800CCC0F message saying the server refused the connection.

Would it be worth the turn all the other computers off option and resetting the password.