postfix mail server with configurable hostname and trusted hosts and proper
shutdown handling
docker pull gitbook/postfix
By default, connected rfc1918 networks are detected and allowed. Local networks (127.0.0.1, ::1) are also allowed.
Postfix logs to a syslog server. Unless indicated, no syslog server is configured or started started. (the phusion baseimage does start a syslog server).
For simplicity, you can bind-mount the one on the host using -v /dev/log:/dev/log
/var/spool/postfixis the spool directory. Its also where postfix chroots to by default./etc/postfixis the configuation directory
You can customize the image behavior using environmental variables or entrypoint arguments.
| Enviromental Variable(s) | Entrypoint Option | Description |
|---|---|---|
(use --hostname) |
--mail-name |
Mail name to use (appears in mail headers). Defaults to hostname |
| RELAYHOST="[relay hostname] | --relayhost [] |
The host to relay mail to. |
TRUST="local" or TRUST_LOCAL="0" |
--trust-local |
Trust addresses on the lo interface. Enabled by default |
TRUST="connected-rfc1918" or TRUST_CONNECTED_RFC="1" |
--trust-connected-rfc1918 |
Trust all locally connected rfc1918 subnets. Enabled by default |
TRUST="connected" or TRUST_CONNECTED="1" |
--trust-connected |
Trust all addresses connected (excluding IPv6 local-link addresses). Disabled by default |
TRUST="rfc1918" or TRUST_RFC1918="1" |
--trust-rfc1918 |
Trust all rfc1918 address. Disabled by default |
TRUST_LLA="1" |
--trust-lla |
Trust the fe80::/64 IPv6 subnet. Disabled by default |
TRUST_SUBNETS="[space separated list of subnets]" |
--trust-subnet [] |
Trust the specified subnet (IPv4 and IPv6 supported). Disabled by default |
TRUST_INTERFACES="[space separated list of interfaces]" |
--trust-interface [] |
Trust all network address on the interface (excluding IPv6 LLA). Disabled by default |
--skip-trust-* |
Use with local, connected-rfc1918, connected, rfc1918, or lla to skip trusting it. Disabled by default | |
--skip-all |
Disable/reset all trusts. Disabled by default |
This was originally forked from onesysadmin/ubuntu-postfix to add semver support etc ...