Mailproblem with restful_authentication plugin

I just installed the restful_authentication plugin and did a generate
with :include-activation. Whenever i signup i get the following error:

Net::SMTPSyntaxError in UsersController#create

504 <ADMINEMAIL>: Sender address rejected: need fully-qualified

What does this mean? I have the actionmailer configurations right i
think: i created a mailer class in the same app for testing and those
mails are being delivered without any problems.

AAARG. nevermind, i just found out that i had to replace the from-
value in the mailer model :expressionless: