34 Zeilen
1,1 KiB
Markdown
34 Zeilen
1,1 KiB
Markdown
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If you want or have to use an external DNS service, you can either set a forwarder in Unbound or copy an override file to define external DNS servers:
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!!! warning
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Please do not use a public resolver like we did in the example above. Many - if not all - blacklist lookups will fail with public resolvers, because blacklist server has limits on how much requests can be done from one IP and public resolvers usually reach this limits.
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**Important**: Only DNSSEC validating DNS services will work.
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## Method A, Unbound
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Edit `data/conf/unbound/unbound.conf` and append the following parameters:
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```
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forward-zone:
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name: "."
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forward-addr: 8.8.8.8 # DO NOT USE PUBLIC DNS SERVERS - JUST AN EXAMPLE
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forward-addr: 8.8.4.4 # DO NOT USE PUBLIC DNS SERVERS - JUST AN EXAMPLE
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```
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Restart Unbound:
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```
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docker-compose restart unbound-mailcow
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```
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## Method B, Override file
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```
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cd /opt/mailcow-dockerized
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cp helper-scripts/docker-compose.override.yml.d/EXTERNAL_DNS/docker-compose.override.yml .
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```
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Edit `docker-compose.override.yml` and adjust the IP.
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Run `docker-compose down ; docker-compose up -d`.
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