mod_firewall: spam-blocking.pfw: Remove requirement for invites to have no body Some clients (e.g. Gajim) send a body, which I guess makes sense. The bare JID sender check should already make it hard to bypass this (i.e. a normal client putting muc#user into a normal chat message shouldn't bypass the usual message filters).

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labels:
summary: Workaround for servers doing EXTERNAL without proper stream headers
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Introduction
============

This module is a workaround for servers that try to do s2s
authentication with certificates and SASL EXTERNAL, but do not send
correct stream headers. Notably Openfire versions since 3.7 or 3.8.