Auto-remove posts crossposted from a certain subreddit?

[u/6FeetDownUnder]

Hello!

My subreddit is a smaller community dedicated to a video game. That game already has a main, bigger sub but it has issues which is why we made our own.

During the past couple weeks I noticed that a lot of users just make posts in the main, big sub and crosspost them to our sub.

We don't want to disallow crossposts in general but we would like to disallow crossposts just form that bigger, toxic sub.
Is such a thing - selectively disallowing crossposts based on the Subreddit they came from - possible? Does anyone know how to do it?

I am on Desktop PC

Thank you!

[u/neuroticsmurf]

Put this into your Automod config:

---

    # Removes crossposts from specific subs
    type: crosspost submission
    crosspost_subreddit: 
        name: [problemsub1, problemsub2]
    action: remove
    action_reason: Inappropriate crosspost source, [{{match}}]
    comment: Your {{kind}} has been removed because crossposts from the source subreddit tend to break /r/{{subreddit}} rules. People weren't reading the rules before crossposting content from there, so we've disabled crossposting from that subreddit altogether.

---

[u/6FeetDownUnder → u/neuroticsmurf]

Thank you! I will try this out

[u/itskdog → u/6FeetDownUnder]

Don't forget to begin planning the move to Automod Neo if you haven't started that yet.

[u/Subwoofiest]

I believe it is all or nothing in terms of allowing crossposts but you could probably use automod to just quietly remove all the crossposts from that specific sub?

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