Hey everyone. This is kind of a follow up to the topic.

Today I've noticed thatGajim's plugin "Anti Spam" got update to the version 0.4.2. I thought it was a trivial bugfix, but hey, now it offers a much needed custom question/answer feature! It may still not be a solution "how spam should be dealed with in 2016", as some people stated before in this list, but huge thanks to developers (CC'd) of this plugin!

Now we need a similar solution for Conversations and after that we may start to work on 2016-esque spam-combating server techniques.

On 11/19/2016 04:45 PM, A wrote:
Hello. Well, seems like XEP-0158 is exactly what I'm describing. So now we just need to persuade popular client/plugins developers to support it, right?

On 11/19/2016 04:40 PM, Evgeny Khramtsov wrote:
Sat, 19 Nov 2016 13:53:53 +0100
Marvin Gülker <m-guel...@phoenixmail.de> wrote:

I like the general idea, but the protocol (not the questions
themselves obviously) should be standardised into a XEP so that not
every client creates its own idea of how to do it. You should suggest
it on the xmpp-standards mailinglist.
I think there is nothing to be standardised, because he is describing
text-based CAPTCHAs generated on client side which is covered by

I'm not sure about 2000's (which the topic starter is referring to), but
I personally didn't see such stuff in modern popular IM clients (Viber,
Whatsapp, etc). For sure, Viber has some SPIM reporting mechanism
suggesting SPIM recognition software is running on Viber servers. Even
Google renders CAPTCHA only for suspicious clients. Since XMPP client
doesn't have a mechanism to suspect someone, it will render CAPTCHA for
genuinely legitimate contacts which is annoying.

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