--- main.cf	2008-02-01 11:38:01.000000000 -0700
+++ main.cf.mailman	2008-02-01 11:41:31.000000000 -0700
@@ -375,7 +375,7 @@
 # "postfix reload" to eliminate the delay.
 #
 #alias_maps = dbm:/etc/aliases
-alias_maps = hash:/etc/aliases
+alias_maps = hash:/etc/aliases, hash:/etc/mailman/aliases
 #alias_maps = hash:/etc/aliases, nis:mail.aliases
 #alias_maps = netinfo:/aliases
 
@@ -398,7 +398,7 @@
 # Basically, the software tries user+foo and .forward+foo before
 # trying user and .forward.
 #
-#recipient_delimiter = +
+recipient_delimiter = +
 
 # DELIVERY TO MAILBOX
 #