Add a mail server template.

[ShubashBiswas]

What problem will this feature address?

I face TLS certificate issues with the docker mail server application

Describe the solution you'd like

I'm requesting to dokploy developer to create a webmail template using well-known mail application for docker
Like docker mail server, mailu

Describe alternatives you've considered

None

Additional context

No response

[Eliminationzx]

bump

[Eliminationzx]

I have been working with the docker-mailserver configuration and wanted to contribute by reviewing a potential setup that I believe works as intended. Below is the Docker Compose snippet I’m using:

services:
  mailserver:
    image: ghcr.io/docker-mailserver/docker-mailserver:latest
    hostname: ${DMS_HOSTNAME}
    ports:
      - "25:25"    # SMTP (STARTTLS)
      - "465:465"  # SMTP (Implicit TLS)
      - "587:587"  # SMTP (STARTTLS)
      - "143:143"  # IMAP (STARTTLS)
      - "993:993"  # IMAP (Implicit TLS)
    volumes:
      - dms-mail-data:/var/mail/
      - dms-mail-state:/var/mail-state/
      - dms-mail-logs:/var/log/mail/
      - dms-mail-config:/tmp/docker-mailserver/
      - /etc/dokploy/traefik/dynamic/acme.json:/etc/letsencrypt/acme.json:ro
      - /etc/localtime:/etc/localtime:ro
    environment:
      - ENABLE_FAIL2BAN=${DMS_ENABLE_FAIL2BAN}
      - PERMIT_DOCKER=${DMS_PERMIT_DOCKER}
      - SPOOF_PROTECTION=${DMS_SPOOF_PROTECTION}
      - SSL_TYPE=${DMS_SSL_TYPE}
      - SSL_DOMAIN=${DMS_SSL_DOMAIN}
      - POSTMASTER_ADDRESS=${DMS_POSTMASTER_ADDRESS}
    cap_add:
      - NET_ADMIN
    restart: always
    stop_grace_period: 1m
    healthcheck:
      test: ${DMS_HEALTHCHECK_CMD}
      timeout: ${DMS_HEALTHCHECK_TIMEOUT}
      retries: ${DMS_HEALTHCHECK_RETRIES}
    command: >
      sh -c '
        if [ ! -s /tmp/docker-mailserver/postfix-accounts.cf ]; then
          echo "File does not exist or is empty. Running setup command...";
          setup email add "${DMS_DEFAULT_USER}" "${DMS_DEFAULT_USER_PASS}";
        else
          echo "File exists and is not empty. Skipping setup command.";
        fi
        exec supervisord -c /etc/supervisor/supervisord.conf
      '
    networks:
      - dokploy-network
      
networks:
  dokploy-network:
    external: true

volumes:
  dms-mail-data:
  dms-mail-state:
  dms-mail-logs:
  dms-mail-config:

Environment:

DMS_HOSTNAME=mail.example.com
DMS_HEALTHCHECK_CMD="ss --listening --tcp | grep -P 'LISTEN.+:smtp' || exit 1"
DMS_HEALTHCHECK_TIMEOUT=3s
DMS_HEALTHCHECK_RETRIES=0
[email protected]
[email protected]
DMS_DEFAULT_USER_PASS=password
DMS_ENABLE_FAIL2BAN=1
DMS_PERMIT_DOCKER=network
DMS_SPOOF_PROTECTION=0
DMS_SSL_TYPE=letsencrypt
DMS_SSL_DOMAIN=example.com

@Siumauricio
Looking forward to any suggestions or corrections you may have. I hope this configuration can either be helpful or be improved further to meet the needs of others.

[SashaGoncharov19]

@Eliminationzx the functionality of the deployable should be available out of the box, preferably without additional manipulations

[DeveloperRaju23]

Dear @Eliminationzx @SashaGoncharov19

I am facing an issue with running the docker-mailserver. The deployment was smooth but the main problem occurred during setup emails.

Steps I followed

1. Create a Service with docker-compose type
2. Copy and paste the code in raw
3. Configured the environments
4. Add a domain: mail.example.com with port 80 and Letsencrypt enabled (tried without adding domain also)
5. Deploy the code
6. Open the terminal to set the email and run the command: setup email add [email protected] Pass123
7. Got the error below

2024-09-10 02:49:18+00:00 INFO start-mailserver.sh: Welcome to docker-mailserver v14.0.0

2024-09-10 02:49:18+00:00 INFO start-mailserver.sh: Checking configuration

2024-09-10 02:49:18+00:00 INFO start-mailserver.sh: Configuring mail server

2024-09-10 02:49:18+00:00 WARN start-mailserver.sh: You need at least one mail account to start Dovecot (120s left for account creation before shutdown)

2024-09-10 02:49:28+00:00 WARN start-mailserver.sh: You need at least one mail account to start Dovecot (110s left for account creation before shutdown)

2024-09-10 02:49:39+00:00 WARN start-mailserver.sh: _extract_certs_from_acme | Unable to find key and/or cert for 'mail.example.com' in '/etc/letsencrypt/acme.json'

2024-09-10 02:49:39+00:00 WARN start-mailserver.sh: _extract_certs_from_acme | Unable to find key and/or cert for 'mail.example.com' in '/etc/letsencrypt/acme.json'

2024-09-10 02:49:39+00:00 WARN start-mailserver.sh: _extract_certs_from_acme | Unable to find key and/or cert for 'example.com' in '/etc/letsencrypt/acme.json'

2024-09-10 02:49:39+00:00 WARN start-mailserver.sh: letsencrypt (acme.json) failed to identify a certificate to extract

2024-09-10 02:49:39+00:00 ERROR start-mailserver.sh: Cannot find a valid DOMAIN for '/etc/letsencrypt/live//', tried: 'mail.example.com', 'mail.example.com', 'example.com'

2024-09-10 02:49:39+00:00 ERROR start-mailserver.sh: _find_letsencrypt_domain | LETSENCRYPT_DOMAIN appears to be misconfigured, please verify.

2024-09-10 02:49:39+00:00 ERROR start-mailserver.sh: Shutting down

2024-09-10 02:49:40,341 WARN exited: mailserver (exit status 1; not expected)

2024-09-10 02:49:40,341 WARN received SIGTERM indicating exit request

After that got another error also

For more reading:

1. Docker Mailserver edge Security | TLS (aka SSL)
2. Tutorials | Mail Server behind a Proxy

[Eliminationzx]

@Eliminationzx the functionality of the deployable should be available out of the box, preferably without additional manipulations

@SashaGoncharov19 @DeveloperRaju23
Post updated.

[SashaGoncharov19]

@Eliminationzx The setup appears to be in order. However, some documentation is required to explain the correct procedure for starting up the mail server.