alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Hotmail Compose Message Submit"; flow:established,to_server; http.uri; content:"/cgi-bin/premail/"; http.host; content:"hotmail.msn.com"; classtype:policy-violation; sid:2000038; rev:15; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_06;)