83 Zeilen
2,1 KiB
Markdown
83 Zeilen
2,1 KiB
Markdown
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This is **ONLY** recommended if you do not have an IPv6 enabled network on your host!
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If you really need to, you can disable the usage of IPv6 in the compose file.
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Additionally, you can also disable the startup of container "ipv6nat-mailcow", as it's not needed if you won't use IPv6.
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Instead of editing docker-compose.yml directly, it is preferable to create an override file for it
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and implement your changes to the service there. Unfortunately, this right now only seems to work for services, not for network settings.
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To disable IPv6 on the mailcow network, open docker-compose.yml with your favourite text editor and search for the network section (it's near the bottom of the file).
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**1.** Modify docker-compose.yml
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Change `enable_ipv6: true` to `enable_ipv6: false`:
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```
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networks:
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mailcow-network:
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[...]
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enable_ipv6: true # <<< set to false
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[...]
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```
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**2.** Disable ipv6nat-mailcow
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To disable the ipv6nat-mailcow container as well, go to your mailcow directory and create a new file called "docker-compose.override.yml":
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**NOTE:** If you already have an override file, of course don't recreate it, but merge the lines below into your existing one accordingly!
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```
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# cd /opt/mailcow-dockerized
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# touch docker-compose.override.yml
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```
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Open the file in your favourite text editor and fill in the following:
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```
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version: '2.1'
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services:
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ipv6nat-mailcow:
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image: bash:latest
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restart: "no"
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entrypoint: ["echo", "ipv6nat disabled in compose.override.yml"]
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```
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For these changes to be effective, you need to fully stop and then restart the stack, so containers and networks are recreated:
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```
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docker-compose down
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docker-compose up -d
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```
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**3.** Disable IPv6 in unbound-mailcow
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Edit `data/conf/unbound/unbound.conf` and set `do-ip6` to "no":
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```
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server:
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[...]
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do-ip6: no
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[...]
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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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**4.** Disable IPv6 in postfix-mailcow
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Create `data/conf/postfix/extra.cf` and set `smtp_address_preference` to `ipv4`:
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```
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smtp_address_preference = ipv4
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inet_protocols = ipv4
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```
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Restart Postfix:
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```
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docker-compose restart postfix-mailcow
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```
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