rusxakep/postfix-relay
Postfix Relay for easy SMTP capabilities for containers based on Alpine w/Zabbix Monitoring
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rusxakep/postfix-relay repository overview
hub.docker.com/r/rusxakep/postfix-relay
Introduction
Dockerfile to build a simple Postfix container designed to relay messages to an external SMTP Server
This container uses Alpine:3.12 as a base.
Authors
Table of Contents
Prerequisites
This image will need to connect to an external SMTP Server with user authentication enabled.
Installation
Automated builds of the image are available on Registry and is the recommended method of installation.
docker pull rusxakep/postfix-relay
Quick Start
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The quickest way to get started is using docker-compose. See the examples folder for a working docker-compose.yml that can be modified for development or production use.
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Set various environment variables to understand the capabilities of this image.
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Map persistent storage for access to configuration and data files for backup.
Configuration
Data-Volumes
The following directories are used for configure and can be mapped for persistent storage.
| Directory | Description |
|---|---|
/var/log | Postfix Mail Logs |
Environment Variables
Below is the complete list of available options that can be used to customize your installation.
| Parameter | Description |
|---|---|
SMTP_HOST | The SMTP Host to forward mails to (e.g. mail.hostname.com) - Default localhost |
SMTP_USER | The username for authentication to remote SMTP (e.g. [email protected]) - REQUIRED |
SMTP_PASS | The password for above username (e.g. password) - REQUIRED |
SERVER_NAME | The hostname to identify ourselves to the remote SMTP Server (e.g. yourhost.hostname.com) - Default postfix-relay |
ACCEPTED_NETWORKS | Who to allow access to relay - Default 172.16.0.0/12 |
USE_TLS | Use TLS when sending yes or no - Default no |
TLS_VERIFY | Trust Level for checking remote cert (none, may, encrypt, dane, dane-only, fingerprint, verify, secure - Default may) |
Maintenance
Shell Access
For debugging and maintenance purposes you may want access the containers shell.
docker exec -it (whatever your container name is e.g. postfix-relay) bash
References
Tag summary
Content type
Image
Digest
Size
60.8 MB
Last updated
about 5 years ago
docker pull rusxakep/postfix-relay