# Spamfilter-Unbound

Spamfilter-Unbound is a self-hosted network services app. Recursive DNS resolver for the IMAP spam filter stack. It is open source and self-hosted, installable on Docker Hub and Unraid.

Canonical page: https://ourlocalhost.com/app/455/spamfilter-unbound

## Description

Recursive DNS resolver for the IMAP spam filter stack. Lets rspamd run DNSBL queries (Spamhaus, Abusix, SpamCop) without hitting the rate-limits that public/shared resolvers impose. Required for the RBL module to actually contribute signal.

## Platform availability

Available on 1 of 9 platforms: Unraid.

## Health score

48/100 (Fair), based on 3 of 4 factors.
- Maintained: 72 (last commit 130 days ago)
- Popular: 20 (9 GitHub stars)
- Easy to install: 35 (1 install platform, install notes, Docker image)

## Links

- Docker Hub: https://hub.docker.com/r/mvance/unbound
- GitHub: https://github.com/marcelverdult/imap-spamfilter
- Unraid: https://ca.unraid.net/apps/spamfilter-unbound-044614e1daqjx6?q=spamfilter-unbound

## Common questions

### Which Docker image does the imap-spamfilter stack use for unbound?

The architecture table lists mvance/unbound:latest for the spamfilter-unbound container.

### What resolver issue is the local unbound container intended to address?

It keeps DNSBL lookups out of shared-resolver quotas.

### Is unbound run as its own container in the stack?

Yes, the stack architecture lists spamfilter-unbound as a separate container alongside the Redis, rspamd, and main spamfilter containers.

---
Source: Our Local Host (https://ourlocalhost.com/app/455/spamfilter-unbound), the self-hosted and open-source app directory.