[jdev] All together now...

[JD Conley]

> It seems that servers with full blown xml parsers are okay, while the
> hand built ones might be falling prey to this issue.  (not that I've
> checked what jabberd2 uses)

Well, not necessarily. It is perfectly legitimate XML to change the
default namespace of an element inside an XML document. But, when
crossing the C2S -S2S gap in XMPP the server is responsible for not
retransmitting stanzas in the jabber:client namespace. If a server
simply tacks on the "from" address and forwards the stanza to the S2S
socket stream then that is legitimate XML, but bad XMPP.

-JD Conley