That mymachine.org doesn't mean anything, I forgot to change it back to 826michigan.org. In any case, it's not relevant - I just tried it successfully with the default localhost.localdomain.
Since the auth step is failing it must be an id/password issue (unless you're still using the 3-argument auth!). I'm not sure what else to do. Random thoughts: Are you an ATT DSL customer like me? Are you using the DSL account id or an additional email id? Did you escape the '@' in the email address? Does the same id/password work on the web email interface http://att.yahoo.com/mail?
In reply to Re^3: SMTP authentication misery
by gmargo
in thread SMTP authentication misery
by cypress
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