# MASQUERADE john@ on host "hamlet" will send all mails as john@hamlet
# MASQUERADE percolator will send mails as $username@percolator, e.g. fish@percolator
# MASQUERADE herb@ert will send all mails as herb@ert
+
+# Directly forward the mail to the SMARTHOST bypassing aliases and local delivery
+#NULLCLIENT