Hi there,
I was used to snort notifying me of search engines accessing the robots.txt file on my web server several times a day.
Actually, there are the corresponding entrys in the intrustion detection log:
2009:12:22-11:55:49 astaro1 snort[21233]: id="2101" severity="warn" sys="SecureNet" sub="ips" name="Intrusion protection alert" action="alert" reason="WEB-MISC robots.txt access" group="211" srcip="67.218.116.162" dstip="192.168.0.90" proto="6" srcport="38545" dstport="80" sid="1852" class="access to a potentially vulnerable web application" priority="2" generator="1" msgid="0"
But there was no mail notification sent out to me (it is enabled in WebAdmin, which I reassured again)!
Regards,
Bastian