--- /usr/local/etc/rc.d/milter-opendkim.orig    2015-08-14 21:36:55.000000000 +0200
+++ /usr/local/etc/rc.d/milter-opendkim 2015-08-31 22:44:54.974504169 +0200
@@ -38,6 +38,7 @@ rcvar=milteropendkim_enable

 extra_commands="reload"
 start_precmd="dkim_prepcmd"
+start_postcmd="dkim_start_postcmd"
 stop_postcmd="dkim_postcmd"
 command="/usr/local/sbin/opendkim"
 _piddir="/var/run/milteropendkim"
@@ -51,6 +52,7 @@ load_rc_config $name
 #
 : ${milteropendkim_enable="NO"}
 : ${milteropendkim_uid="mailnull"}
+: ${milteropendkim_gid="mailnull"}
 : ${milteropendkim_cfgfile="/usr/local/etc/mail/opendkim.conf"}

 # Options other than above can be set with $milteropendkim_flags.
@@ -157,6 +159,21 @@ dkim_prepcmd ()
     if [ -n "${milteropendkim_uid}" ] ; then
        chown ${milteropendkim_uid} ${_piddir}
     fi
+    if [ -n "${milteropendkim_gid}" ] ; then
+       chgrp ${milteropendkim_gid} ${_piddir}
+    fi
+    chmod 0775 ${_piddir}
+}
+
+dkim_start_postcmd ()
+{
+    # postcmd is executed too fast and socket is not created before checking...
+    sleep 1
+    if [ -S ${milteropendkim_socket##local:} ] ; then
+        chmod 0775 ${milteropendkim_socket##local:}
+    elif [ -S ${milteropendkim_socket##unix:} ] ; then
+        chmod 0775 ${milteropendkim_socket##unix:}
+    fi
 }

 dkim_postcmd()