Subj : Re: Dupe checking
To   : Johannes Beekhuizen
From : Dale Shipp
Date : Wed Apr 14 2004 02:37 am

 -=> On 04-13-04  08:52,  Johannes Beekhuizen <=-
 -=> spoke to Dale Shipp about Re: Dupe checking <=-

 JB> Hallo Dale,

 JB> Op 09 Apr 04 schreef Dale Shipp aan Bo Simonsen:
 
 DS> One is based on MSGID.  The other is based on the header info (TO,
 DS> FROM, SUBJ and DATE).  If *either* of these two things is a match,
 DS> then Squish calls the message a dupe.

 JB> That's not how I understand it.  Allow me to quote from the manual:

  Then you understand wrong.   Read the very two last lines in what you
  quoted.  It is quite explicit.

 JB> If EITHER the MSGID or the
        ^^^^^^
 JB> header is duplicated, Squish will declare the message to
 JB> be a dupe.

   That means that you do *not* need both, either one will cause the
   message to be declared a dupe.

   IMO, it would be better if it declared the message to be a dupe only
   if both items said so, but that is not the case.

 JB> === import ===

 JB> DupeCheck [<type>...]

 JB> The DupeCheck keyword controls the dupe-checking
 JB> algorithm used by Squish:

 JB> <type> can be either or both of "Header" or "MSGID".

 JB> "Header" instructs Squish to check the message header
 JB> to determine whether or not a message is a dupe.  Squish
 JB> will hash the "To", "From" and "Subject" fields into a
 JB> 32-bit identifier.  It will append the message date to
 JB> this, resulting in a 64-bit duplicate identifier.

 JB> "MSGID" instructs Squish to check the MSGID kludge to
 JB> determine whether or not a message is a dupe.  Squish
 JB> will hash the text of the MSGID "address" field into a
 JB> 32-bit identifier.  It will append the MSGID serial
 JB> number to this, resulting in a 64-bit duplicate
 JB> identifier. 
 JB> If only one of the above settings is enabled, Squish
 JB> will only use that method when determining whether or
 JB> not a message is a dupe.

 JB> However, if both MSGID and Header are specified, Squish
 JB> will perform both checks.  If EITHER the MSGID or the
 JB> header is duplicated, Squish will declare the message to
 JB> be a dupe.
 JB> === tropmi ===

 JB> I read is as: If and only if both Header and MsgID are the same, the
 JB> message  is a dupe.  Which seems sensible to me.  That, at least in the
 JB> last Linux  release, it didn't work is a different matter.

 JB> Groetjes,

 JB> Hans.

 JB> -!- GoldED+/LNX 1.1.5cvs031202
 JB>  ! Origin: The Wizard uses MBSE/Linux (2:280/1018)



.... Shipwrecked on Hesperus in Columbia, Maryland. 01:03:40, 14 Apr 2004
___ Blue Wave/DOS v2.30

--- Maximus/NT 3.01
 * Origin: Owl's Anchor (1:261/1466)

.