74mbit/postfix repository overview

⁠Postfix Docker Container

Simple Postfix SMTP Relay with relay hosts.

Mail logs are streamed to stdout and not stored on disk.

⁠Environment Variables

• MAILNAME - set this to a legitimate hostname for this service (required).
• MYNETWORKS - comma separated list of IP subnets that are allowed to relay.
• RELAYHOST - relay host.
• FALLBACK_RELAYHOST - fallback relay host.

⁠Volumes

Persistent spool storage: mount /var/spool/postfix outside of the container.

⁠Test email

To send a test email via the command line, make sure heirloom-mailx is installed.

echo -e "To: Bob <[email protected]>\nFrom: Bill <[email protected]>\nSubject: Test email\n\nThis is a test email message" | mailx -v -S smtp=smtp://... -S [email protected] -t

# With TLS
echo -e "To: Bob <[email protected]>\nFrom: Bill <[email protected]>\nSubject: Test email\n\nThis is a test email message" | mailx -v -S smtp-use-starttls -S ssl-verify=ignore -S smtp=smtp://... -S [email protected] -t