Subj : IZ echomail and seenby's
To   : Tommi Koivula
From : mark lewis
Date : Wed May 27 2015 14:08:58


28 May 15 02:57, you wrote to Paul Quinn:

 PQ>> --- D'Bridge 3.99
 PQ>>  * Origin: Many Glacier -- Protect - Preserve - Conserve (2:292/854)
 PQ>> SEEN-BY: 221/1 280/5555 640/305 384 1384 690/682
 PQ>> PATH: 292/854 280/5555 640/384

 PQ>> --- SBBSecho 2.27-Win32
 PQ>>  * Origin: The Lions Den BBS, Trenton, On, CDN (1:249/303)
 PQ>> SEEN-BY: 221/1 280/5555 640/305 384 1384 690/682
 PQ>> PATH: 249/303 280/464 5555 640/384

 TK> Both of these messages have address of origin on PATH line, but not on
 TK> SEENBY line.

right... some software adds their address to the seenbys and some doesn't...

here's what FTS-0004 has to say about seenbys...

[quote]
    4. Seen-by Lines

         There can  be many  seen-by lines  at the  end of Conference
         Mail messages,  and they  are the real "meat" of the control
         information. They  are used  to  determine  the  systems  to
         receive the exported messages. The format of the line is:

                     SEEN-BY: 132/101 113 136/601 1014/1

         The net/node  numbers correspond  to the net/node numbers of
>        the systems having already received the message. In this way
>        a message  is never  sent to a system twice. In a conference
         with many  participants the  number of  seen-by lines can be
         very large.   This line is added if it is not already a part
         of the  message, or added to if it already exists, each time
         a message  is exported  to other systems. This is a REQUIRED
         field, and  Conference Mail  will not  function correctly if
         this field  is not put in place by other Echomail compatible
         programs.
[/quote]

note the two hilited lines... strict reading of that line might suggest that 
each system that gets a message add their address to the seenbys... another 
view is like that used today where the sending system adds the addresses of the 
systems it is sending the message to... nothing is really said about what an 
originating system should do with its address and the seenbys... on one hand, 
it makes sense to add it, on the other, it is in the origin and the first in 
the path so it should be apparent that it saw it already...

then think about what happens when a point originates an echomail message... 
take this one for example ;)

 TK> I have received also some .PKT's from Andrew's FE, but I didn't find any
 TK> failures yet.

that's a good thing :)

)\/(ark

.... That old thing? It is a pretty good work of fiction, though!
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 * Origin:  (1:3634/12.73)

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