postfix: Uncommented the query in pgsql-smtpd_sender_login_maps.cf.
--- a/postfix/pgsql-smtpd_sender_login_maps.cf Fri Apr 06 21:32:09 2012 +0000
+++ b/postfix/pgsql-smtpd_sender_login_maps.cf Fri Apr 06 21:34:23 2012 +0000
@@ -15,4 +15,4 @@
# * line 26: function postfix_smtpd_sender_login_map + comment above
#
# The SQL query template used to search the database
-#query = SELECT login FROM postfix_smtpd_sender_login_map('%u', '%d')
+query = SELECT login FROM postfix_smtpd_sender_login_map('%u', '%d')