feat: add MAILNAME config

Author: computator

entrypoint.sh

@@ -53,10 +53,11 @@ setup_utils () {
 }
 
 : \
+	${DMA_MAILNAME=${MAILNAME-}} \
 	${DMA_SMARTHOST=${SMARTHOST-}} \
 	${DMA_PORT=${SMARTHOST_PORT-}} \
 	${DMA_AUTHPATH="/etc/dma/auth.conf"}
-export DMA_SMARTHOST DMA_PORT DMA_AUTHPATH
+export DMA_MAILNAME DMA_SMARTHOST DMA_PORT DMA_AUTHPATH
 
 # set default command if flags passed
 [ "${1#-}" = "$1" ] || set -- msmtpd "$@"

units/smtp-proxy.container

@@ -9,6 +9,7 @@ ContainerName=smtp-proxy
 PublishPort=127.0.0.1:25:25
 # Environment=NO_NETWORK=true
 
+Environment=MAILNAME=%H
 Environment=SMARTHOST=smtp.example.com
 Environment=SMARTHOST_PORT=587
 Environment=AUTH_USER=smartuser