Is RCVD_NUMERIC_HELO meant to match helo=2xx.2.2xx.62.fix.example.com ?

[Per Jessen]

I was just wondering - 

RCVD_NUMERIC_HELO will match "helo=2xx4.2.2xx.62.fix.example.com" - but
is that intentional?  It's not exactly a numeric helo?


/Per Jessen, Zürich