mailcow-dockerized/data/conf/dovecot/config_templates/fts.conf.j2

{% if SKIP_FTS|lower in ['n', 'no'] %}
plugin {
    fts_autoindex = yes
    fts_autoindex_exclude = \Junk
    fts_autoindex_exclude2 = \Trash
    # Tweak this setting if you only want to ensure big and frequent folders are indexed, not all.
    fts_autoindex_max_recent_msgs = 20
    fts = flatcurve

    # Maximum term length can be set via the 'maxlen' argument (maxlen is
    # specified in bytes, not number of UTF-8 characters)
    fts_tokenizer_email_address = maxlen=100
    fts_tokenizer_generic = algorithm=simple maxlen=30

    # These are not flatcurve settings, but required for Dovecot FTS. See
    # Dovecot FTS Configuration link above for further information.
    fts_languages = en es de
    fts_tokenizers = generic email-address

    # OPTIONAL: Recommended default FTS core configuration
    fts_filters = normalizer-icu snowball stopwords
    fts_filters_en = lowercase snowball english-possessive stopwords

    fts_index_timeout = 300s
}

service indexer-worker {
  # Max amount of simultaniously running indexer jobs.
  process_limit = {{ FTS_PROCS }}

  # Max amount of RAM used by EACH indexer process.
  vsz_limit = {{ FTS_HEAP }} MB
}
{% endif %}