run mailhog docker and test sending email on MacOS

# run mailhog docker

• Start mailhog directly by docker file

download Dockerfile from mailhog github

build it

docker build -t mailhog .

then run docker with docker run -p 8025:8025 -p 1025:1025

above command means run docker image and mount port 8025 to 8025 on docker, and port 1025 on your machine to port 1025 on docker

• Run immediately by one command

docker run -p 8025:8025 -p 1025:1025 mailhog/mailhog

above command will build and run docker for you

• Via docker composer

create docker-composer.yml file with below content

version: "3"
services:
  mailhog:
    image: mailhog/mailhog:latest
    restart: always
    ports:
      - 1025:1025
      - 8025:8025

run it: docker-composer up -d mailhog

now you can access mailhog client by: http://localhost:8025

# Config postfix and send sample email on MacOS

• Config postfix

sudo vi /etc/postfix/main.cf

add these two lines to postfix config file

myhostname = localhost
relayhost = [127.0.0.1]:1025

stop and start postfix: sudo postfix stop && sudo postfix start

• send sample email

date | mail -s "Hello — subject here" test@any.com

now you can observe email from http://localhost:8025