diff --git a/sa-update.cronscript b/sa-update.cronscript
index 6d645bb..cab2411 100644
--- a/sa-update.cronscript
+++ b/sa-update.cronscript
@@ -1,11 +1,23 @@
 #!/bin/bash
 # *** DO NOT MODIFY THIS FILE ***
-# Edit /etc/cron.d/sa-update to enable nightly automatic updates
+#
 # /etc/mail/spamassassin/sa-update-channels.txt 
 #     Specify custom channels here
+#
 # /etc/mail/spamassassin/sa-update-keys.txt
 #     Specify trusted GPG keys for custom channels here
 
+# Proceed with sa-update if spam daemon is running or forced in /etc/sysconfig/sa-update
+unset SAUPDATE
+[ -f /etc/sysconfig/sa-update ] && . /etc/sysconfig/sa-update
+for daemon in spamd amavisd; do
+    /sbin/pidof $daemon >& /dev/null
+    [ $? -eq 0 ] && SAUPDATE=yes
+done
+
+# Skip sa-update if daemon not detected
+[ -z "$SAUPDATE" ] && exit 0
+
 # Sleep random amount of time before proceeding to avoid overwhelming the servers
 sleep $(expr $RANDOM % 7200)
 
diff --git a/sa-update.crontab b/sa-update.crontab
index 371481f..ca08444 100644
--- a/sa-update.crontab
+++ b/sa-update.crontab
@@ -1,9 +1,12 @@
-### OPTIONAL: Spamassassin Rules Updates ###
+# *** DO NOT MODIFY THIS FILE ***
+### Spamassassin Rules Updates ###
 #
 # http://wiki.apache.org/spamassassin/RuleUpdates
-# Highly recommended that you read the documentation before using this.
-# ENABLE UPDATES AT YOUR OWN RISK.
+# 
+# sa-update automatically updates your rules once per day if a spam daemon like
+# spamd or amavisd are running.  You can force sa-update to run in
+# /etc/sysconfig/sa-update
 #
 # /var/log/sa-update.log contains a history log of sa-update runs
 
-#10 4 * * * root /usr/share/spamassassin/sa-update.cron 2>&1 | tee -a /var/log/sa-update.log
+10 4 * * * root /usr/share/spamassassin/sa-update.cron 2>&1 | tee -a /var/log/sa-update.log
diff --git a/sa-update.force-sysconfig b/sa-update.force-sysconfig
new file mode 100644
index 0000000..e9de72c
--- /dev/null
+++ b/sa-update.force-sysconfig
@@ -0,0 +1,4 @@
+# Uncomment below to force nightly sa-update
+# (you don't need to do this if you use spamd or amavisd)
+
+#SAUPDATE=yes
diff --git a/spamassassin.spec b/spamassassin.spec
index 259fcc3..dbe966d 100644
--- a/spamassassin.spec
+++ b/spamassassin.spec
@@ -1,7 +1,7 @@
 # OVERRIDE RHEL VERSION HERE, RHEL BUILDSYSTEM DOESN'T HAVE DIST TAG
 #%%define rhel 4
 
-#%define _source_filedigest_algorithm md5
+%define _source_filedigest_algorithm md5
 
 # Define Variables that must exist
 %{?!rhel:%define rhel 0}
@@ -55,7 +55,7 @@ Name: spamassassin
 Version: 3.3.0
 %define prename rc1
 %define proposed .proposed2
-Release: 0.26.%{prename}%{?dist}
+Release: 0.27.%{prename}%{?dist}
 License: ASL 2.0
 Group: Applications/Internet
 URL: http://spamassassin.apache.org/
@@ -68,6 +68,7 @@ Source5: spamassassin.sysconfig
 Source6: sa-update.logrotate
 Source7: sa-update.crontab
 Source8: sa-update.cronscript
+Source9: sa-update.force-sysconfig
 Source10: spamassassin-helper.sh
 Source11: sa-update-channels.txt
 Source12: sa-update-keys.txt
@@ -174,6 +175,7 @@ install -m 0644 %{SOURCE4} %buildroot/etc/mail/spamassassin
 install -m 0755 %{SOURCE10} %buildroot/etc/mail/spamassassin
 install -m 0644 %{SOURCE6} %buildroot/etc/logrotate.d/sa-update
 install -m 0644 %{SOURCE7} %buildroot/etc/cron.d/sa-update
+install -m 0644 %{SOURCE9} %buildroot%{_sysconfdir}/sysconfig/sa-update
 # installed mode 744 as non root users can't run it, but can read it.
 install -m 0744 %{SOURCE8} %buildroot%{_datadir}/spamassassin/sa-update.cron
 install -m 0644 %{SOURCE13} %buildroot%{_datadir}/spamassassin/
@@ -217,7 +219,8 @@ echo 783 > $RPM_BUILD_ROOT%{_sysconfdir}/portreserve/spamd
 %{_initrddir}/spamassassin
 %config(noreplace) %{_sysconfdir}/mail/spamassassin
 %config(noreplace) %{_sysconfdir}/sysconfig/spamassassin
-%config(noreplace) %{_sysconfdir}/cron.d/sa-update
+%config(noreplace) %{_sysconfdir}/sysconfig/sa-update
+%{_sysconfdir}/cron.d/sa-update
 %dir %{_datadir}/spamassassin
 %dir %{_localstatedir}/run/spamassassin
 %dir %{_localstatedir}/lib/spamassassin
@@ -261,6 +264,10 @@ fi
 exit 0
 
 %changelog
+* Mon Dec 28 2009 Warren Togami <wtogami@redhat.com> - 3.3.0-0.27.rc1
+- sa-update runs in cron automatically if spamd or amavisd is running
+  If you use neither, you may force sa-update by editing /etc/sysconfig/sa-update.
+
 * Mon Dec 21 2009 Warren Togami <wtogami@redhat.com> - 3.3.0-0.26.rc1
 - 3.3.0-rc1.proposed2 with fixed spamc