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Recently there have been noticed a sudden surge in Jabber/XMPP spammers activity. Spammers not only manage to send a regular messages to users, like this:

Message

but also a some kind of announcement message, each of which opens in a separate window, which is frustratingly annoying. Here is one of such windows:

Announcement

It is been suggested by a user here, that these are just a regular messages, but with a subject. Is there a way to disable such messages server wide?

  • Best way to find out is probably to get an XML capture of those spam messages. Only then you can figure out what they are. – xnyhps Oct 5 '15 at 14:16
  • How do I do that? – Neurotransmitter Oct 5 '15 at 14:30
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This is not announcement. It seems to be standard message with subject. You simply need to find the abuse user and block their account and tighten control and validation on account registration. It is for example a good idea to block in-band registration and handle registration through a web form.

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  • There are plenty of such malicious users with disposable usernames. Are there a method to disable such messages with subject server wide? – Neurotransmitter Oct 5 '15 at 16:00
  • Message with subject are just standard XMPP messages. Please see the XMPP RFC, subject is a valid optional field: xmpp.org/rfcs/rfc6121.html#message-syntax-subject Even if you write a custom module, spammers will still be able to send messages without subject. You need to tighten your control on account registration. – Mickaël Rémond Oct 5 '15 at 16:07
  • I am okay for now for regular spam messages, what I seek is to how to disable these annoying spam messages in separate windows. By the way, there is nothing to do with account registration on my server, since all spammers are from other servers. On the screenshot provided it is shown, that this particular one came from kdetalk.net. I've blocked this JID of course, but it is just a disposable one. – Neurotransmitter Oct 5 '15 at 19:43
  • What I am saying, is that it is a regular spam message. – Mickaël Rémond Oct 6 '15 at 11:51
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    yes, you need someone to write it. I may give it a go when I have some time but do not hold your breath, not sure when I can do it – Mickaël Rémond Oct 7 '15 at 16:11

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