James,
 
JC>WD> JC> MSGID/REPLYID should be done by the BBS.
JC>WD>
JC>WD> Wrong layer .... if you ask me.
 
JC> The answer is specific to his question.  He is running a BBS and its not
JC> possible for his tosser to add a REPLYID given his setup.  There is no
JC> other layer, the only place it can work at all would be if his BBS does
JC> it.
 
Fidonet is not about BBSs though BBSs can use it to link-up. Hence my answer is correct.
 
The original question was "So is it the mailer or the BBS that handles MSGIDs?"
 
"Handling MSGIDs" implies that the MSGID is already there otherwise it cannot be handled at all, so it's the tosser handling it, not the BBS.
 
If you wanted to ask about setting or inserting a MSGID, then you expressed yourself rather poorly.
 
 \%/@rd

--- DB4 - Oct 12 2021