SMTP server to use for forwarding messages via HTTP-based services in environments not supporting SMTP outbound directly
Relay accepts SMTP connection to handle message with invoking Mailgun API with the message it got. Simply :) In depth in current implementation relay sends message synchronously via Mailgun Go's client.
docker run -it \
-e RELAY_ADDR=:2025 \
-e RELAY_DOMAIN="<domain>" \
-e RELAY_MAILGUN_PRIVATE_KEY="<mailgun private key>" \
-e RELAY_MAX_IDLE_SECONDS=300 \
-e RELAY_MAX_MESSAGE_BYTES=1048576 \
-e RELAY_MAX_RECIPIENTS=50 \
teran/relay
MIT