📝 Preliminary Checks

• I tried searching for an existing issue and followed the debugging docs advice, but still need assistance.

👀 What Happened?

Unable to use secure method to authenticate for imap/pop and postfix.

👟 Reproduction Steps

Use the example compose file.
Add use sarit to the system.

🐋 DMS Version

12.1.0

💻 Operating System and Architecture

AWS t2.small Linux ip-172-31-23-120 4.9.0-19-amd64 #1 SMP Debian 4.9.320-2 (2022-06-30) x86_64 GNU/Linux

⚙️ Container configuration files

version: '2'

services:
  mailserver:
    image: ghcr.io/docker-mailserver/docker-mailserver:latest
    container_name: mailserver
    # Provide the FQDN of your mail server here (Your DNS MX record should point to this value)
    hostname: mail.elcolie.com
    environment:
      - SSL_TYPE=letsencrypt
    volumes:
      - ./docker-data/certbot/certs/:/etc/letsencrypt
    ports:
      - "25:25"
      - "143:143"
      - "465:465"
      - "587:587"
      - "993:993"
    volumes:
      - ./docker-data/dms/mail-data/:/var/mail/
      - ./docker-data/dms/mail-state/:/var/mail-state/
      - ./docker-data/dms/mail-logs/:/var/log/mail/
      - ./docker-data/dms/config/:/tmp/docker-mailserver/
      - /etc/localtime:/etc/localtime:ro
    environment:
      - ENABLE_RSPAMD=1
      - ENABLE_CLAMAV=1
      - ENABLE_FAIL2BAN=1
      - ENABLE_POP3=1
    cap_add:
      - NET_ADMIN # For Fail2Ban to work
    restart: always

I can't send an email.

thunderbird

docker

mailserver | Aug 7 08:54:00 mail postfix/smtps/smtpd[1024]: connect from ppp-171-97-99-32.revip8.asianet.co.th[171.97.99.32]
mailserver | Aug 7 08:54:00 mail postfix/smtps/smtpd[1024]: lost connection after EHLO from ppp-171-97-99-32.revip8.asianet.co.th[171.97.99.32]
mailserver | Aug 7 08:54:00 mail postfix/smtps/smtpd[1024]: disconnect from ppp-171-97-99-32.revip8.asianet.co.th[171.97.99.32] ehlo=1 commands=1

Then try SSL/TLS

thunderbird sending forever

But docker got connection and then close

mailserver    | Aug  7 08:55:47 mail postfix/smtps/smtpd[1391]: connect from ppp-171-97-99-32.revip8.asianet.co.th[171.97.99.32]
mailserver    | Aug  7 08:55:55 mail postfix/postscreen[1405]: CONNECT from [182.43.254.122]:55648 to [172.20.0.2]:25
mailserver    | Aug  7 08:55:55 mail postfix/postscreen[1405]: PREGREET 11 after 0.1 from [182.43.254.122]:55648: EHLO User\r\n
mailserver    | Aug  7 08:55:56 mail postfix/postscreen[1405]: DISCONNECT [182.43.254.122]:55648

Currently that one is work.
smtp.

imap

So this docker is not secure at all.