http://issues.apache.org/SpamAssassin/show_bug.cgi?id=5571
------- Additional Comments From [EMAIL PROTECTED] 2007-07-24 08:33 -------
afaik this resembles Windows Vista's Mail (ex OE) Msg-ID format
been using the rule below for METAs
header __MID_VISTA Message-ID =~ /^\<[A-F0-9]{32}\@/
can you find out if the box is running some Vista flavour?
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