Does any understand this log message please?

/usr/sbin/smtpc -m -h smtp.mydomain.com -r (E-Mail Removed) -s "NETGEAR
*Security Alert* [bb:79:b7]" -U myuserid -P password </var/log/alert -
À<°mo'!àTàÿ½'


I have found this in my Netgear router's logs. It is indeed configured to
send me e-mail alerts to '(E-Mail Removed)', using myuserid and password as
above, but I don't understand why this had suddenly appeared in the log, for
the first time. The norm is for it to simply send an e-mail and also
confirm this in the logs, but not to show the above.

Any ideas? Thanks!