Subj : SEEN-BY To : Paul Hayton From : Andrew Leary Date : Mon Apr 01 2019 05:26 am Hello Paul! 01 Apr 19 12:15, you wrote to all: PH> Mark is saying that Mystic SEEN-BY lines may be incorrect in that at PH> the start of each line he says there should be a reference to the NET PH> like this example he gave. PH> When James is back on deck I was going to feed this info back to him PH> but wanted to do due diligence first and find FTSC docs that explain PH> this requirement. PH> At the moment I can't find anything except in FTS-0004 where there's a PH> section about SEEN-BY but no mention of the need to start each line PH> with a NET/NODE combo. PH> Can someone point me to where I can reference this need and provide PH> any commentary about this subject please? http://ftsc.org/docs/fsc-0074.001 has this to say: 3. Seen-by Lines Seen-by lines are the focus of EchoMail distribution control information. They are used to determine which addresses (systems) have received messages. There can be as many seen- by lines as required to store the necessary information. Seen-by lines consist of "SEEN-BY:", followed by a list of net/node numbers corresponding to the systems which have received that message. The net/node number of each system to which a message is exported is added to the seen-by lines at the time of export. There shall be exactly one set of seen-by lines in a message. Seen-by lines: - Shall follow the origin line. - Shall begin with the nine character literal: _ SEEN-BY: - Shall contain a list of net/node numbers. - Shall be no more than 80 characters long including the required literal. The complete lines might look like: SEEN-BY: 104/1 501 132/101 113 136/601 1014/1 SEEN-BY: 1014/2 3 The list of net/node numbers: - Shall identify at least one address. "Blank" seen-by lines shall not be transmitted. - Shall be sorted in ascending net/node order. - Shall not contain repeated node numbers. - Shall use only "2D" net/node notation. - May use short form address notation where a net number is listed once on any one line. These 2 lines are equivalent: SEEN-BY: 104/1 104/501 132/101 132/113 136/601 SEEN-BY: 104/1 501 132/101 113 136/601 Some implementations insert a Ctrl-A (0x01) immediately preceding the SEEN-BY: literal (^ASEEN-BY:). Six months after adoption of this document the ^ASEEN-BY: format shall be processed equally with the SEEN-BY: format when either occurs in received packets. _ The critical phrase is: "May use short form address notation where a net number is listed once on any one line." My interpretation is that the net number must be listed at least once on any one SEEN-BY line. Regards, Andrew --- GoldED+/LNX 1.1.5-b20180707 * Origin: Phoenix BBS * phoenix.bnbbbs.net (1:320/219) .