# mailman

The site-wide antispam defaults are deliberately empty:

```yaml
mailman_antispam_header_checks: []
mailman_antispam_chain_behaviour: discard
```

Mailing-list owners can manage list-specific header matches and select their
action (`accept`, `discard`, `hold`, or `reject`) from Postorius. The global
chain is used only when a matching rule has no explicit action.