The 'from' attribute of a stanza sent by a client does not match the bare JID or full JID authenticated for the stream, indicating a spoofed sender address. This is a stream-level error that terminates the stream.
stream-invalid-from
xmpp The 'from' attribute of a stanza sent by a client does not match the bare JID or full JID authenticated for the stream, indicating a spoofed sender address. This is a stream-level error that terminates the stream.