docker-mailserver/docs/content/advanced/full-text-search.md

## Overview

Full-text search allows all messages to be indexed, so that mail clients can quickly and efficiently search messages by their full text content.

The [dovecot-solr Plugin](https://wiki2.dovecot.org/Plugins/FTS/Solr) is used in conjunction with [Apache Solr](https://lucene.apache.org/solr/) running in a separate container. This is quite straightforward to setup using the following instructions.

## Setup Steps

1. docker-compose.yml:

```
  solr:
    image: lmmdock/dovecot-solr:latest
    volumes:
     - solr-dovecot:/opt/solr/server/solr/dovecot
    restart: always

  mailserver:
    image: tvial/docker-mailserver:latest
    ...
    volumes:
      ...
      - ./etc/dovecot/conf.d/10-plugin.conf:/etc/dovecot/conf.d/10-plugin.conf:ro
    ...

volumes:
  solr-dovecot:
    driver: local

```

2. `etc/dovecot/conf.d/10-plugin.conf`:
```
mail_plugins = $mail_plugins fts fts_solr

plugin {
  fts = solr
  fts_autoindex = yes
  fts_solr = url=http://solr:8983/solr/dovecot/ 
}
```

3. Start the solr container: `docker-compose up -d --remove-orphans solr`

4. Restart the mailserver container: `docker-compose restart mailserver`

5. Flag all user mailbox FTS indexes as invalid, so they are rescanned on demand when they are next searched
```
docker-compose exec mailserver doveadm fts rescan -A
```


## Further discussion
See [issue #905](https://github.com/tomav/docker-mailserver/issues/905)