Rule History

SID: 2012984 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Jun 10, 2011, 12:00 PM

Message:

ET SMTP Sophos.com Block Message

Rule:

alert tcp $EXTERNAL_NET 25 -> $HOME_NET any (msg:"ET SMTP Sophos.com Block Message"; flow:established,from_server; content:"sophos.com"; classtype:not-suspicious; sid:2012984; rev:2; metadata:created_at 2011_06_10, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Jun 10, 2011, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 3, 2025, 8:34 PM

Filename:

rules/emerging-smtp.rules