Ansible Role postfix

This role installs and configures postfix.

Tags

postfix

• Installs and configures postfix.

• Triggers: postfix.service reload.

postfix:state

• Manages the state of the postfix systemd service.

• Triggers: none.

Mandatory Role Variables

postfix__relayhost

• Host name of the mail server.

• Type: String.

Example:

# mandatory
postfix__relayhost: 'mail.example.com:587'

Optional Role Variables

postfix__aliases__host_var / postfix__aliases__group_var

• List of dictionaries for /etc/aliases, a system-wide mechanism to redirect mail for local recipients.

• For the usage in host_vars / group_vars (can only be used in one group at a time).

• Type: List of dictionaries.

• Default: []

• Subkeys:

  • name:

    • Mandatory. The local address (no domain part).

    • Type: String.

  • value:

    • Mandatory. Generally the redirect address. Have a look at man aliases for advanced options.

    • Type: String.

  • state:

    • Optional. State of the entry. Either 'present' or 'absent'.

    • Type: String.

    • Default: 'present'

postfix__biff

• See https://www.postfix.org/postconf.5.html#biff

• Type: Bool.

• Default: false

postfix__bounce_queue_lifetime

• See https://www.postfix.org/postconf.5.html#bounce_queue_lifetime

• Type: String.

• Default: '5d'

postfix__inet_interfaces

• The local network interface addresses that this mail system receives mail on.

• Type: String.

• Default: '127.0.0.1'

postfix__inet_protocols

• The Internet protocols Postfix will attempt to use when making or accepting connections. Specify one or more of ipv4 or ipv6, separated by whitespace or commas. The form all is equivalent to ipv4, ipv6 or ipv4, depending on whether the operating system implements IPv6.

• Type: String.

• Default: 'all'

postfix__lookup_tables__host_var / postfix__lookup_tables__group_var

• List of dictionaries containing Postfix Lookup Tables. The role automatically runs postmap if the table changed.

• For the usage in host_vars / group_vars (can only be used in one group at a time).

• Type: List of dictionaries.

• Default: []

• Subkeys:

  • path:

    • Mandatory. Path to the lookup table. Can be used in postfix__raw.

    • Type: String.

  • content:

    • Mandatory. Content of the lookup table.

    • Type: String.

  • state:

    • Optional. State of the lookup table. Either 'present' or 'absent'.

    • Type: String.

    • Default: 'present'

postfix__mailbox_size_limit

• See https://www.postfix.org/postconf.5.html#mailbox_size_limit

• Type: Number.

• Default: 51200000

postfix__mastercf_entries__host_var / postfix__mastercf_entries__group_var

• See https://www.postfix.org/master.5.html

• For the usage in host_vars / group_vars (can only be used in one group at a time).

• Type: List of dictionaries.

• Default: see vars/

• Subkeys:

  • service:

    • Mandatory. The service name syntax depends on the service type as described next.

    • Type: String.

  • type:

    • Mandatory. Specify one of the service types found in the above link.

    • Type: String.

  • private:

    • Mandatory. Whether a service is internal to Postfix (pathname starts with private/), or exposed through Postfix command-line tools (path-name starts with public/). Internet (type inet) services can’t be private.

    • Type: String.

  • unpriv:

    • Mandatory. Whether the service runs with root privileges or as the owner of the Postfix system (the owner name is controlled by the mail_owner configuration variable in the main.cf file).

    • Type: String.

  • chroot:

    • Mandatory. Whether or not the service runs chrooted to the mail queue directory (pathname is controlled by the queue_directory configuration variable in the main.cf file).

    • Type: String.

  • wakeup:

    • Mandatory. Automatically wake up the named service after the specified number of seconds. The wake up is implemented by connecting to the service and sending a wake up request. A ? at the end of the wake-up time field requests that no wake up events be sent before the first time a service is used. Specify 0 for no automatic wake up.

    • Type: String.

  • maxproc:

    • Mandatory. The maximum number of processes that may execute this service simultaneously. Specify 0 for no process count limit.

    • Type: String.

  • command:

    • Mandatory. The command to be executed.

    • Type: String.

  • arguments:

    • Mandatory. The arguments to execute the command with.

    • Type: List.

  • state:

    • Optional. State of the entry. Either 'present' or 'absent'.

    • Type: String.

    • Default: 'present'

postfix__maximal_queue_lifetime

• See https://www.postfix.org/postconf.5.html#maximal_queue_lifetime

• Type: String.

• Default: '5d'

postfix__message_size_limit

• See https://www.postfix.org/postconf.5.html#message_size_limit

• Type: Number.

• Default: 10240000

postfix__mydestination

• See postfix.org

• Type: String.

• Default: '$myhostname, localhost.$mydomain, localhost'

postfix__myhostname

• See postfix.org

• Type: String.

• Default: unset

postfix__mynetworks

• See https://www.postfix.org/postconf.5.html#mynetworks

• Type: List.

• Default: []

postfix__myorigin

• See postfix.org

• Type: String.

• Default: '$myhostname'

postfix__raw

• Raw content which will be appended to the /etc/postfix/main.cf.

• Type: Multiline string.

• Default: unset

postfix__recipient_delimiter

• See https://www.postfix.org/postconf.5.html#recipient_delimiter

• Type: String.

• Default: ''

postfix__relayhost_password

• Password for the specified user.

• Type: String.

• Default: ''

postfix__relayhost_username

• Username with access to the mail server.

• Type: String.

• Default: '{{ mailto_root__from }}'

postfix__sender_canonicals__group_var / postfix__sender_canonicals__host_var

• List of dictionaries for /etc/postfix/canonical, used to rewrite the sender addresses.

• For the usage in host_vars / group_vars (can only be used in one group at a time).

• Type: List of dictionaries.

• Default: []

• Subkeys:

  • pattern:

    • Mandatory. Regular expression to match the entire sender address.

    • Type: String.

  • address:

    • Mandatory. The rewrite address.

    • Type: String.

  • state:

    • Optional. State of the entry. Either 'present' or 'absent'.

    • Type: String.

    • Default: 'present'

postfix__service_enabled

• Enables or disables the postfix service, analogous to systemctl enable/disable.

• Type: Bool.

• Default: true

postfix__service_state

• Changes the state of the postfix service, analogous to systemctl start/stop/restart/reload. Possible options: started, stopped, restarted, reloaded.

• Type: String.

• Default: 'started'

postfix__smtp_destination_concurrency_limit

• See https://www.postfix.org/postconf.5.html#smtp_destination_concurrency_limit

• Type: Number.

• Default: 20

postfix__smtp_destination_recipient_limit

• See https://www.postfix.org/postconf.5.html#smtp_destination_recipient_limit

• Type: Number.

• Default: 50

postfix__smtp_sasl_auth_enable

• Enable SASL authentication in the Postfix SMTP client. By default, the Postfix SMTP client uses no authentication.

• Type: Bool.

• Default: true

postfix__smtp_sasl_mechanism_filter

• If non-empty, a Postfix SMTP client filter for the remote SMTP server’s list of offered SASL mechanisms.

• Type: List.

• Default: []

postfix__smtp_sasl_password_maps

• See postfix.org

• Type: String.

• Default: '{{ __postfix__map_type }}:/etc/postfix/sasl_passwd'

postfix__smtp_sasl_security_options

• List of Postfix SMTP client SASL security options. Possible options: noplaintext, noactive, nodictionary, noanonymous, mutual_auth.

• Type: List.

• Default: ['noanonymous']

postfix__smtp_tls_security_level

• The default SMTP TLS security level for the Postfix SMTP client. When a non-empty value is specified, this overrides the obsolete parameters smtp_use_tls, smtp_enforce_tls, and smtp_tls_enforce_peername; when no value is specified for smtp_tls_enforce_peername or the obsolete parameters, the default SMTP TLS security level is none. Set this to 'encrypt' (or stronger) for SMTPS wrappermode (TCP port 465).

• Type: String.

• Default: 'may'

postfix__smtp_tls_wrappermode

• Request that the Postfix SMTP client connects using the SUBMISSIONS/SMTPS protocol instead of using the STARTTLS command. This mode requires postfix__smtp_tls_security_level: 'encrypt' or stronger.

• Type: Bool.

• Default: false

postfix__smtpd_tls_cert_file

• See postfix.org

• Type: String.

• Default: '/etc/pki/tls/certs/postfix.pem'

postfix__smtpd_tls_key_file

• See postfix.org

• Type: String.

• Default: '/etc/pki/tls/private/postfix.key'

postfix__smtpd_tls_security_level

• See postfix.org

• Type: String.

• Default: 'may'

Example:

# optional
postfix__aliases__host_var:
  - name: 'root'
    value: 'admin1@example.com,admin@example.com'
    state: 'present'
postfix__biff: false
postfix__bounce_queue_lifetime: '5d'
postfix__inet_interfaces: 'all'
postfix__inet_protocols: 'all'
postfix__lookup_tables__host_var:
  - path: '/etc/postfix/sender_access_blacklist'
    content: |
        spam.example.com DISCARD
    state: 'present'
postfix__mailbox_size_limit: 51200000
postfix__mastercf_entries__host_var:
  - service: 'smtps'
    type: 'inet'
    private: 'n'
    unpriv: '-'
    chroot: 'n'
    wakeup: '-'
    maxproc: '-'
    command: 'smtpd'
    arguments:
      - '-o syslog_name=postfix/smtps'
      - '-o smtpd_tls_wrappermode=yes'
      - '-o smtpd_reject_unlisted_recipient=no'
    state: 'present'
  - service: 'maildrop'
    type: 'unix'
    private: '-'
    unpriv: 'n'
    chroot: 'n'
    wakeup: '-'
    maxproc: '-'
    command: 'pipe'
    arguments:
      - 'flags=DRXhu user=vmail argv=/usr/bin/maildrop -d ${recipient}'
    state: 'present'
postfix__maximal_queue_lifetime: '5d'
postfix__message_size_limit: 10240000
postfix__mydestination: '$myhostname, localhost.$mydomain, localhost'
postfix__myhostname: 'mail.example.com'
postfix__mynetworks:
  - '192.0.2.0/24'
postfix__myorigin: '$myhostname'
postfix__raw: |-
  # dovecot
  home_mailbox = mail/
  mailbox_transport = lmtp:unix:/var/run/dovecot/lmtp

  # enable SMTP authentication (via dovecot)
  smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination
  smtpd_sasl_auth_enable = yes
  smtpd_sasl_local_domain = $myhostname
  smtpd_sasl_path = private/auth
  smtpd_sasl_security_options = noanonymous
  smtpd_sasl_type = dovecot
  smtpd_tls_auth_only = yes
  # smtpd_tls_loglevel = 1

  # prevent an authenticated client from using a MAIL FROM address that they do not explicitly own and use a blacklist
  smtpd_sender_restrictions = reject_sender_login_mismatch, check_sender_access hash:/etc/postfix/sender_access_blacklist
  # for reject_sender_login_mismatch to work we need to correctly map username@example.com to username
  smtpd_sender_login_maps = regexp:/etc/postfix/sender_login_map

  # DKIM
  smtpd_milters = inet:localhost:8891
  non_smtpd_milters = $smtpd_milters
postfix__recipient_delimiter: ''
postfix__relayhost_password: ''
postfix__relayhost_username: ''
postfix__sender_canonicals__host_var:
  - pattern: '/^.+@example.com$/'
    address: 'noreply@example.com'
    state: 'present'
postfix__service_enabled: true
postfix__service_state: 'started'
postfix__smtp_destination_concurrency_limit: 20
postfix__smtp_destination_recipient_limit: 50
postfix__smtp_sasl_auth_enable: true
postfix__smtp_sasl_mechanism_filter:
  - 'xoauth2'
postfix__smtp_sasl_password_maps: 'hash:/etc/postfix/sasl_passwd'
postfix__smtp_sasl_security_options:
  - 'noplaintext'
  - 'noanonymous'
postfix__smtp_tls_security_level: 'encrypt'
postfix__smtp_tls_wrappermode: true
postfix__smtpd_tls_cert_file: '/etc/pki/tls/certs/postfix.pem'
postfix__smtpd_tls_key_file: '/etc/pki/tls/private/postfix.key'
postfix__smtpd_tls_security_level: 'may'

License

The Unlicense

Author Information

Linuxfabrik GmbH, Zurich