474:cgi_client.py
       messageid = 
"<%s.%s.%s@%s>"%(time.time(), random.random(),
            
self.classname, self.instance.MAIL_DOMAIN)
435:mailgw.py
            
messageid = "<%s.%s.%s%s@%s>"%(time.time(), 
random.random(),
                classname, nodeid, 
self.MAIL_DOMAIN)
335:roundupdb.py
            messageid = 
"<%s.%s.%s%s@%s>"%(time.time(), random.random(),
                
self.classname, nodeid, self.MAIL_DOMAIN)


shouldnt this be 
self.instance.MAIL_DOMAIN always ?