--- a/dovecot-example.conf	Sun Oct 16 17:48:25 2005 +0300
+++ b/dovecot-example.conf	Sun Oct 16 17:59:12 2005 +0300
@@ -473,11 +473,18 @@
   #  Courier version 2   : %v-%u
   #  Cyrus (<= 2.1.3)    : %u
   #  Cyrus (>= 2.1.4)    : %v.%u
+  #  Older Dovecots      : %v.%u
   #
-  # Note that Outlook 2003 seems to have problems with %v.%u format which is
+  # Note that Outlook 2003 seems to have problems with %v.%u format which was
   # Dovecot's default, so if you're building a new server it would be a good
   # idea to change this. %08Xu%08Xv should be pretty fail-safe.
-  #pop3_uidl_format = %v.%u
+  #
+  # NOTE: Nowadays this is required to be set explicitly, since the old
+  # default was bad but it couldn't be changed without breaking existing
+  # installations. %08Xu%08Xv will be the new default, so use it for new
+  # installations.
+  #
+  #pop3_uidl_format = 
 
   # POP3 logout format string:
   #  %t - number of TOP commands