Newbie: some alerts not firing

Hm OK I updated the rules, now puzzled about why this one is alerting:

00020522 2011-03-24 12:53:44 send_alert fiona.e-dialog.com:vmio state Paging
00020522 2011-03-24 12:53:44 Matching host:service:page
'fiona.example.com:vmio:' against rule line 146
00020522 2011-03-24 12:53:44 *** Match with 'HOST=%db* EXHOST=%*dl2*
SERVICE=vmio' ***
00020522 2011-03-24 12:53:44 Matching host:service:page
'fiona.e-dialog.com:vmio:' against rule line 147
00020522 2011-03-24 12:53:44 *** Match with 'MAIL xymail REPEAT=1d
RECOVERED' ***

Fiona alerted for vmio and is paging. Fiona does not have the string
"db" anywhere in its name. (I replaced my company with example but the
company name doesn't have a db in it either)

later on I get
00020753 2011-03-24 12:58:09 Matching host:service:page
'fiona.example.com:vmio:' against rule line 181
00020753 2011-03-24 12:58:09 Failed 'HOST=%*db*' (hostname not in include list)

The regexp is different in that there's a second asterisk, but the
machines I want to catch do all start with db...

thanks again
Betsy