.@ Tony Finch – blog


Turns out this is a bug in jabberd2. What my server sends to Google is <presence.xmlns=‘jabber:client’.from=‘dot@dotat.at’ to=‘tony.finch@gmail.com’ type=‘subscribe’/>. Note that the XML namespace is set to jabber:client despite the fact that this is a server-to-server connection. D’oh!


In any case, Google have added an interop work-around and I can now communicate between dot@dotat.at and any @gmail.com Jabber user. Sweet.