Postfix Relay

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• disable_vrfy_command | boolean

  Default: True

  Disable the SMTP VRFY command. This isn't usually useful for relays.

• domain_rewrite_map | string

  A list of domain:newdomain pairs to rewrite. Primarily used for allowing hosts with locally-resolvable domain names to send mail which appears to be from a real domain. Addresses in these domains will be rewritten from user@host.domain to user+host@newdomain.

• myhostname | string

  The external hostname by which this mail relay is known. If not set, Postfix will default to using the system's FQDN.

• mynetworks | string

  Default: 127.0.0.0/8

  A comma-separated list of networks for which this relay will allow sending mail.

• nagios_context | string

  Default: juju

  Used by the nrpe subordinate charms. A string that will be prepended to instance name to set the host name in nagios. So for instance the hostname would be something like: juju-myservice-0 If you're running multiple environments with the same services in them this allows you to differentiate between them.

• nagios_servicegroups | string

  A comma-separated list of nagios servicegroups. If left empty, the nagios_context will be used as the servicegroup

• relayhost | string

  An upstream mail relay, sometimes called "smart host". Enclose it in square brackets to skip MX lookup.

• sender_dependent_relayhost_maps | string

  A YAML-encoded list of (sender, relay host) pairs. If set, messages from each given sender will be sent via the given relay host.

• smtp_auth_password | string

  Password to auth against remote mail server using smtp_auth_username. Requires smtp_auth_username to take effect.

• smtp_auth_username | string

  Username to auth against remote mail server. Requires smtp_auth_password to take effect.

• smtpd_helo_required | boolean

  Default: True

  Require that a remote SMTP client sends HELO or EHLO before commencing a MAIL transaction.

• smtpd_recipient_restrictions | string

  Default: permit_mynetworks, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_pipelining

  Optional restrictions which the Postfix SMTP server applies in the context of a client RCPT TO command.

• ssl_ca | string

  Base64-encoded SSL CA to use with the upstream relay host. If set postfix will assume the upstream host is using TLS and configure itself accordingly.