--- a/INSTALL	Tue Aug 25 11:36:36 2009 +0000
+++ b/INSTALL	Tue Aug 25 12:17:56 2009 +0000
@@ -105,6 +105,9 @@
     chmod 700 /usr/local/lib/dovecot
     chown nobody /usr/local/lib/dovecot
     cp /usr/lib/dovecot/deliver /usr/local/lib/dovecot/
+    # on BSD:
+    chgrp nobody /usr/local/lib/dovecot/deliver
+    # on Linux:
     chgrp nogroup /usr/local/lib/dovecot/deliver
     chmod u+s,o-rwx /usr/local/lib/dovecot/deliver
 

--- a/UPGRADE	Tue Aug 25 11:36:36 2009 +0000
+++ b/UPGRADE	Tue Aug 25 12:17:56 2009 +0000
@@ -28,13 +28,17 @@
          \i update_types_and_functions_0.5.x_for_dovecot-1.2.x.pgsql
 
        * You have also to adjust the permissions of the set-uid deliver copy:
-         chgrp nogroup /usr/local/lib/dovecot/deliver
+         on BSD:
+           chgrp nobody /usr/local/lib/dovecot/deliver
+         on Linux:
+           chgrp nogroup /usr/local/lib/dovecot/deliver
          chmod u+s,o-rwx /usr/local/lib/dovecot/deliver
 
        * Check the master.cf from Postfix.
          In prior setups the service dovecot was configured slightly different.
          If you have set the command attribute 'user' to 'nobody:mail', so
-         either remove the group mail or replace it with the group nogroup.
+         either remove the group mail or replace it with the group nobody
+         or nogroup.
 
          e.g.: flags=DRhu user=nobody argv=/usr/local/lib/dovecot/deliver …