mailcow/generate_config.sh

#!/bin/bash

if [[ -f mailcow.conf ]]; then
  read -r -p "A config file exists and will be overwritten, are you sure you want to contine? [y/N] " response
  case $response in
    [yY][eE][sS]|[yY])
      mv mailcow.conf mailcow.conf_backup
      ;;
    *)
      exit 1
    ;;
  esac
fi

read -p "Hostname (FQDN): " -ei "mx.example.org" MAILCOW_HOSTNAME
read -p "Timezone: " -ei "Europe/Berlin" TZ

cat << EOF > mailcow.conf
# ------------------------------
# mailcow web ui configuration
# ------------------------------
# example.org is _not_ a valid hostname, use a fqdn here.
# Default admin user is "admin"
# Default password is "moohoo"
MAILCOW_HOSTNAME=${MAILCOW_HOSTNAME}

# ------------------------------
# SQL database configuration
# ------------------------------
DBNAME=mailcow
DBUSER=mailcow

# Please use long, random alphanumeric strings (A-Za-z0-9)
DBPASS=$(</dev/urandom tr -dc A-Za-z0-9 | head -c 28)
DBROOT=$(</dev/urandom tr -dc A-Za-z0-9 | head -c 28)

# ------------------------------
# Misc configuration
# ------------------------------
# You should leave that alone
# Can also be 11.22.33.44:25 or 0.0.0.0:465 etc. for specific bindings
SMTP_PORT=25
SMTPS_PORT=465
SUBMISSION_PORT=587
IMAP_PORT=143
IMAPS_PORT=993
POP_PORT=110
POPS_PORT=995
SIEVE_PORT=4190

# Your timezone
TZ=${TZ}
EOF