2.0.1 update issue:(root) MAIL (mailed 43 bytes of output but got status 0x0001)

[RonpfS]

Just got this in System log

2011-12-22 00:00:00	Cron.Info	1.2.3.4	/usr/sbin/cron[57166]: (root) CMD (/usr/bin/nice -n20 /usr/local/sbin/expiretable -t 10800 snort2c)
2011-12-22 00:00:00	Cron.Info	1.2.3.4	/usr/sbin/cron[57216]: (root) CMD (/usr/local/bin/php -q /usr/local/www/pfblocker.php cron)
2011-12-22 00:00:00	Cron.Info	1.2.3.4	/usr/sbin/cron[57243]: (root) CMD (/usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 sshlockout)
2011-12-22 00:00:00	Cron.Info	1.2.3.4	/usr/sbin/cron[57343]: (root) CMD (/usr/bin/nice -n20 newsyslog)
2011-12-22 00:00:00	Cron.Info	1.2.3.4	/usr/sbin/cron[57518]: (root) CMD (/usr/bin/nice -n20 /usr/local/sbin/expiretable -v -t 3600 virusprot)

2011-12-22 00:00:00	Cron.Info	1.2.3.4	cron[56947]: (root) MAIL (mailed 43 bytes of output but got status 0x0001 )
2011-12-22 00:00:00	Cron.Info	1.2.3.4	cron[56523]: (root) MAIL (mailed 28 bytes of output but got status 0x0001 )
2011-12-22 00:00:00	Cron.Info	1.2.3.4	cron[56713]: (root) MAIL (mailed 29 bytes of output but got status 0x0001 )