what does amavis logging "Passed CEAN" with "Hits: -," mean?

[Len Conrad]

example:

Sep 16 01:18:22 mx1 amavis[11483]: (11483-01-31) Passed CLEAN, [12.xx.40.141] 
[12.xx.40.141] <[EMAIL PROTECTED]> -> <[EMAIL PROTECTED]>, Message-ID: <[EMAIL 
PROTECTED]>, mail_id: 2M64mzvIA3wf, Hits: -, queued_as: 2CC9D1AF49B, 407 ms

is "-" the same as "0.0", or something else?

Len



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