[Astronome]

Hi, I am running Outlook 2003 on XP and my email sends/receives fine. I am using the identical settings on a second PC running Outlook 2007 on Vista and cannot send email. I get the above error message. Both machines connect to the internet via the same home network so I don't understand why one works and the other doesn't. Any ideas? I've tried setting the account to 'Outgoing server requires authentication' but that merely gives the error 'none of the authentication methods available are supported by your server'. I'm stumped!