Alerts as .dat attachments

["Kimberly McKinnis" <kmckinnis (at) macrovision.com>]

Perhaps someone can help me shed some light on this. I'm receiving some
red alerts as .dat attachments. Is this normal behavior?

red Mon Feb 13 20:33:11 2006: /Ping.tst Set-Cookie: JSESSI

&red http://10.228.3.4/Ping.tst - /Ping.tst Set-Cookie: JSESSI

HTTP/1.1 404 /Ping.tst Set-Cookie:
JSESSIONID=100BAAD89BF9FB00920DA09504FEB4B1; Path=/ Content-Type:
text/html Date: Tue, 14 Feb 2006 04:34:21 GMT Server: Apache-Coyote/1.1
Connection: close 
Seconds:     0.00

See (hobbit URL here)
------

Hobbit-alerts.cfg:

$NSHOSTS=%(sc-isus-ns-1|sc-isus-ns-2|sc-isus-ns-3|sc-isus-ns-4|sc-isus-p
w-1).subdomain.domain.com

HOST=$NSHOSTS SERVICE=http
        MAIL isus-sms REPEAT=2h RECOVERED COLOR=red FORMAT=sms

HOST=*
        MAIL isus-mail REPEAT=12h RECOVERED COLOR=red
EXHOST=sc-isds-1.subdomain.domain.com

UNMATCHED
        MAIL contact (at) domain.com COLOR=red REPEAT=12h RECOVERED
-------

Is this a default behavior I didn't know about? It doesn't seem to be
consistent. I've looked through the online page about configuring
alerts. Perhaps I've missed something in my alerts.cfg. Thanks!