ZXN0ZWJhbkBtYW1pdGFzZmxvd2Vycy5jb20=  esteban@mamitasflowers.com
c2VydmVy			      server

ZXN0ZWJhbg==			      esteban


//WHERE email='%u@%r'  <-- this is in smtpd.conf, apperently does like '%u'@'%r'
//use the first example.