README.md

mailgun-smtp-server

This is a docker image that makes use of midi-smtp-server project and the mailgun-ruby SDK to accept SMTP email via standard methods and relay those messages via the mailgun HTTP API rather than the mailgun smtp servers. It's a neat little tool that allows you to act as an SMTP server for legacy systems, but operate without using outgoing SMTP traffic (which may be blocked by your ISP).

Usage

docker run --name mail \
  -e MG_KEY=yourmailgunapikey \
  -e MG_DOMAIN=yourmailgundomain \
  -p 25:25
  andrewmiskell/mailgun-smtp-server

• MG_SMTPD_SIMULATENOUS_CONNECTIONS can be passed to allow more than 4 simulatenous connections
• MG_SMTPD_OPTIONS maps to opts parameter in midi-smtp-server's Smtpd class.
• MG_SMTPD_PORT can be passed to bind to a port other than 25
• MG_SMTPD_ADDRESS can be passed to bind the server to an address other than 0.0.0.0

License/Author/Credits

License: Apache v2 (see LICENSE file in this repository for details)

Credits:

• Thanks to the original author Steve Nolen (https://github.com/stevenolen/mailgun-smtp-server)
• Thanks to Tom Freudenberg, 4commerce technologies AG for the awesome, extensible and dreadfully simple smtp server.
• Thanks to mailgun for their service and ruby sdk.