OK, how does this look? And if it looks OK, how come I'm still getting bounced at pythoncraft.com <http://pythoncraft.com>?
""" Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.1.0 <steve@holdenweb.com <mailto:steve@holdenweb.com>>: Sender address rejected: User unknown in virtual alias table (state 14). """
I'm not a postfix expert, but my interpretation is that pythoncraft.com tried to generate an automatic reply, and that this automatic reply couldn't be sent because of a misconfiguration on pythoncraft.com. I suggest that you follow the advise and contact pythoncraft.com's postmaster. Regards, Martin