fleet(_at_)teachout(_dot_)org wrote:
egrep -i "message-id: [<][0-9]{10}[(_dot_)][0-9]{4}[(_at_)]" file(s)
gives me no false hits. The terminal @ appears to be necessary. All
the msgid strings begin with 104??? The second part (just before the
@) can be four or five digits. This also got hits in an old spam
folder (Aug 02).
Hits nothing at all on my current spam (or good mail). But okay; it
might be useful as another footprint of a spam engine emanating phonied
M-ID's.
Is there a way to say "4 or 5 digits"? Something like [$N[$N]]@ maybe?
That's what the question mark does in a regular expression.
$N?
means "zero or one $Ns".
--
dman
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