SMTP: Invalid HELO Value

This signature detects SMTP "HELO" commands with invalid values. This is most commonly used by spammers to hide the sender's IP address. This signature is not recommended for blocking between known trusted MTA's.

Short Name
SMTP:INVALID-HELO
Severity
Warning
Recommended
False
Recommended Action
None
Category
SMTP
Keywords
HELO Invalid Value
Release Date
02/13/2014
Supported Platforms

srx-branch-12.3

srx-19.3

srx-branch-19.3

vsrx3bsd-19.2

srx-branch-19.4

vsrx-19.4

mx-12.3

mx-19.4

vmx-19.4

mx-19.3

vsrx3bsd-19.4

srx-19.4

vsrx-12.3

vmx-19.3

vsrx-19.2

srx-12.3

Sigpack Version
3375
False Positive
Unknown

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