* Dave Cridland <[email protected]> [2015-08-12 10:54]: > For MUC, I'll summarize our conversation online as servers already have to > track directed presence to chatrooms; it should be relatively low-cost to > check responses and mark those as chatrooms as needed, and then perform a > lookup for Carbons purposes.
That way you can make sure a client won't receive carbons of PMs of MUCs he's not joined to. A remaining problem is that multiple clients might be joined using the same nick name, in which case you don't know whether the MUC service delivers PMs to all or just one of them.¹ Holger ¹ Cf. http://mail.jabber.org/pipermail/standards/2015-May/029825.html
