I am using Outlook 2010 and periodically for no apparent reason I can't send emails
although I can receive them. The error message I get is '0x800CCC80 none of the authentication methods
supported by this client by this client are supported by your server'
I have tried various solutions I found on line but no success.
Normally the problem goes away up to a week later but clearly I can't keep having these interuptions.
I have ticked 'My outgoing server (SMTP) requires authentication' and have set it to 'use same settings as my incoming mail server'
Don't know what else you need to know?