I am using Outlook 2007, my ISP is bellsouth.net. I can receive email, but
cannot send email through OUTLOOK. I get an error that says "authentication
methods by this client are not supported by server." Bellsouth says my
settings are ok and if I can receive email, then I am connecting. Anyone
know of a fix?

I do not have Office 2003 loaded on this computer. OFFICE ENTERPRISE 2007 is
the only one installed.