version: "3"
networks:
rohan-proxy:
external: true
services:
nginx-proxy-manager:
container_name: nginx-proxy-manager
image: 'jc21/nginx-proxy-manager:latest'
restart: unless-stopped
environment:
- VIRTUAL_HOST=nginx.example.com
- VIRTUAL_PORT=81
ports:
- '80:80'
- '81:81'
- '443:443'
volumes:
- /opt/data/nginx-manager/data:/data
- /opt/data/nginx-manager/letsencrypt:/etc/letsencrypt
networks:
- rohan-proxy
mailserver:
image: analogic/poste.io
container_name: mailserver
hostname: mail
domainname: example.com
dns:
- 1.1.1.1
- 1.0.0.1
ports:
- "80:80" # Webmail/Admin
- "25:25" # SMTP (explicit TLS => STARTTLS)
- "465:465" # ESMTP (implicit TLS)
- "587:587" # ESMTP (explicit TLS => STARTTLS)
- "143:143" # IMAP4
- "993:993" # IMAP4 (implicit TLS)
volumes:
- /opt/data/mail:/data
- /opt/data/mail/webmail/plugins:/opt/www/webmail/plugins
- /opt/data/mail/webmail/config:/opt/www/webmail/config
- /etc/localtime:/etc/localtime:ro
environment:
- TZ=Europe/Seville
- HTTPS=OFF
- VIRTUAL_HOST=mail.example.com
- VIRTUAL_PORT=80
- DISABLE_CLAMAV=FALSE
restart: always
networks:
Replies to mail-compose.yml 
{"html5":"htmlmixed","css":"css","javascript":"javascript","php":"php","python":"python","ruby":"ruby","lua":"text\/x-lua","bash":"text\/x-sh","go":"go","c":"text\/x-csrc","cpp":"text\/x-c++src","diff":"diff","latex":"stex","sql":"sql","xml":"xml","apl":"apl","asterisk":"asterisk","c_loadrunner":"text\/x-csrc","c_mac":"text\/x-csrc","coffeescript":"text\/x-coffeescript","csharp":"text\/x-csharp","d":"d","ecmascript":"javascript","erlang":"erlang","groovy":"text\/x-groovy","haskell":"text\/x-haskell","haxe":"text\/x-haxe","html4strict":"htmlmixed","java":"text\/x-java","java5":"text\/x-java","jquery":"javascript","mirc":"mirc","mysql":"sql","ocaml":"text\/x-ocaml","pascal":"text\/x-pascal","perl":"perl","perl6":"perl","plsql":"sql","properties":"text\/x-properties","q":"text\/x-q","scala":"scala","scheme":"text\/x-scheme","tcl":"text\/x-tcl","vb":"text\/x-vb","verilog":"text\/x-verilog","yaml":"text\/x-yaml","z80":"text\/x-z80"}