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Update bind-smtp-network-interface.md

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Added options to setup docker into using the same interface for outgoing traffic
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Zlatibor Veljkovic 2025-01-27 11:02:37 +01:00 • committed by GitHub
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docs/content/examples/use-cases/bind-smtp-network-interface.md
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@ -66,3 +66,26 @@ to the respective IP-address on the server you want to use.
[gh-pr::3465::comment-restrictions]: https://github.com/docker-mailserver/docker-mailserver/pull/3465#discussion_r1458114528
[gh-pr::3465::alternative-solution]: https://github.com/docker-mailserver/docker-mailserver/pull/3465#issuecomment-1678107233
[gh-src::postfix-master-cf::relay-transport]: https://github.com/docker-mailserver/docker-mailserver/blob/9cdbef2b369fb4fb0f1b4e534da8703daf92abc9/target/postfix/master.cf#L65
!!! note "Docker compose config for making docker-mailserver use specific outbound IP"
```
services:
mailserver:
image: ghcr.io/docker-mailserver/docker-mailserver:latest
container_name: mailserver
# Provide the FQDN of your mail server here (Your DNS MX record should point to this value)
hostname: REDACTED
env_file: mailserver.env
networks:
- mailnet
...SNIP unrelated
networks:
mailnet:
name: mailnet
driver: bridge
driver_opts:
com.docker.network.bridge.host_binding_ipv4: 203.RED.ACT.ED
com.docker.network.host_ipv4: 203.RED.ACT.ED
```