---
summary: Prevent unaffiliated MUC participants from sending PMs
---
# Introduction
This module prevents unaffiliated users from sending private messages in
chat rooms, unless someone with an affiliation (member, admin etc)
messages them first.
# Configuration
The module doesn't have any options, just load it onto a MUC component.
``` lua
Component "muc"
modules_enabled = {
"muc_block_pm";
}
```
# Compatibility
Branch State
-------- -----------------
0.9 Works
0.10 Should work
0.11 Should work