OpenSMTPD stack documentation¶

No delivery guarantee

If you're using a server from a public cloud there's a good chance that its IP is already compromised and blacklisted by major mail services, hence your emails will not be delivered or will land in the spam folder. We strongly recommend using OpenSMTPD in pair with a third-party SMTP services

OpenSMTPD can be configured with the following environment variables

Sending test emails from CLI¶

Access OpenSMTPD container
Run sendmail -v -f [email protected] [email protected]
Enter email subject and body in the input:
```
Subject: test subject

test body
```
Enter Ctrl + D

Integration with third-party SMTP services¶

SendGrid
AWS SES
OpenSMTPD can be configured with any SMTP server. Just provide the following environment variables:
```
RELAY_HOST
RELAY_USER
RELAY_PASSWORD
```
By default, it utilizes TLS schema with port 587 that can be changed via RELAY_PORT.

Changelog¶

This changelog is for OpenSMTPD stack on Wodby, to see image changes see tags description on repository page.

2.1.1¶

🏔️ Alpine Linux security updates (3.20.3)

2.1.0¶

⬆️ OpenSMTPD 7

2.0.4¶

📜 OpenSMTPD now has $RELAY_PROTO to change relay protocol https://github.com/wodby/opensmtpd/pull/2

2.0.3¶

🏔 Alpine Linux updated to 3.18.3, 3.16.7

2.0.2¶

🏔 Alpine Linux upgraded to 3.17.3, 3.16.5

2.0.1¶

🏔 Alpine updated to 3.17.2

2.0.0¶

⚠️ This version of stack requires server infrastructure 6.0.0+
🏔 Alpine updated to 3.17

1.3.1¶

🏔 Base OS Alpine Linux updated to 3.16.3

1.3.0¶

ℹ️ This update requires server infrastructure at least 5.9.0
⬆️ OpenSMTPD 6.8.0
🏔 Alpine Linux updated to 3.15

1.2.0¶

⬆️ OpenSMTPD 6.7.1 (Alpine Linux 3.13)

1.1.8¶

📦 Base OS Alpine Linux updated to 3.10.9

1.1.7¶

🦴 ImagePullPolicy changed to IfNotPresent

1.1.6¶

Alpine Linux updated to 3.11

1.1.5¶

Alpine Linux updated to 3.10.1

1.1.3¶

Alpine Linux updated to 3.9.4

1.1.2¶

Alpine Linux updated to 3.9.3

1.1.1¶

OpenSMTPD patch update to 6.0.3

1.1.0¶

Improved health check now runs smtp command
Messages queue is now persistent
Default memory request set to 4m

1.0.3¶

Allow relay auth without password
Use netcat instead of telnet in health checks
Health check timeout increased to 30 seconds

1.0.2¶

Bugfix: health probes caused warning in logs

1.0.1¶

Support for relay without authentication

1.0.0¶

Initial release