The Jabber Spam Fighting Manifesto https://gist.github.com/ge0rg/2e4accf6950821ca45f743fdf587c08e

Version 0.3, 2017-12-30

The Jabber network (a federated set of thousands of servers with many tens or hundreds thousands of users) is under a continuous flood of spam messages for multiple years. Similar to the open email relays of the mid-1990s, public (and often abandoned) XMPP servers are being abused to deliver those messages.

We, as the operators of public XMPP servers, commit to the following Server Policies to fight spam on our servers, and we announce our intent to block incoming communication from public servers that distribute spam messages and do not adhere to the Server Policies. Furthermore, we will inform other Public Server operators and the general public of domains sending spam and not reacting to abuse reports.

Server Policies

A Public Server is an XMPP server that allows both the registration of accounts by third parties (either via [In Band Registration][XEP-0077] or by other means, like a web form), and federation to other XMPP servers, making it possible for its users to reach out to other XMPP domains.

The operators of a Public Server shall perform the following actions to fight spam:

• Implement [XEP-0157: Contact Addresses for XMPP Services][XEP-0157] and react to incoming abuse reports in a timely fashion.
• Limit the number of new user registrations per IP address and hour.
• Monitor or block registrations from IP addresses with bad reputation (open proxy servers, Tor exit nodes), or enforce additional checks on those users, like a CAPTCHA or a valid phone number.
• Throttle the traffic from local clients, especially unsolicited subscription requests and messages.

[XEP-0077]: https://xmpp.org/extensions/xep-0077.html [XEP-0157]: https://xmpp.org/extensions/xep-0157.html

Schedule

With our signature under this Manifesto, we assure that our servers are already following the above stated Server Policies.

Starting with July 1st, 2018, we will start blocking incoming server connections from Public Servers not following the Server Policies above, if those are forwarding spam messages to our users. The blocking message will contain a reference to this Manifesto.

Committment

Signed,

Georg Lukas, yax.im (https://yaxim.org/yax.im/)

...

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Jason Robinson was a long-term volunteer dev to the Diaspora project who made several important code contributions before deciding to roll his own federated platform. An avid Pythonista, Jason has specializes in Django development, and continues to tinker with decentralized communication.