--- a/pgsql-virtual_mailbox_domains.cf	Wed Sep 03 01:44:25 2008 +0000
+++ b/pgsql-virtual_mailbox_domains.cf	Sat Sep 06 03:07:28 2008 +0000
@@ -9,4 +9,4 @@
 dbname = mailsys
 
 # Postfix 2.2 and later The SQL query template. See pgsql_table(5).
-query = SELECT gid FROM postfix_gid WHERE domainname='%s'
+query = SELECT gid FROM postfix_gid WHERE domainname = '%d'