sendmail graphs

[Great Dilla]

How does one enable [sendmail] graphs? I have searched the mailing
list archives but cannot find any hints. I'm using version 4.1.2p1.

Things I have done so far:
on solaris clients, edited "hobbitclient-sunos.sh"
inserted lines:
*****
echo "[sendmail]"
mailstats
*****
on linux clients, edited "hobbitclient-linux.sh"
inserted lines:
*****
echo "[sendmail]"
mailstats
*****

on the hobbit server, added "TRENDS:*,sendmail:sendmail|sendmail1" to
each host monitored.

I don't see any graphs for sendmail on the hobbit webpage.

Any inputs?