---
title: Charmhub | Deploy Mailman3 Core using Charmhub - The Open Operator Collection
description: Deploy the latest version of Mailman3 Core on any cloud.
url: https://charmhub.io/mailman3-core/configurations
---

# Mailman3 Core

[Mailman3 charm maintainers](https://charmhub.io/publisher/mailman3-charmers "View all packages from Mailman3 charm maintainers")

* [Mailman3 charm maintainers](https://charmhub.io/publisher/mailman3-charmers "View all packages from Mailman3 charm maintainers")
* [Monitoring](https://charmhub.io/?filter=monitoring)

Platform:

22.04

21.10

20.04

18.04

stable e1d5a03

```
juju deploy mailman3-core
```

[Learn to deploy on juju >](https://juju.is/docs/juju/manage-applications)

* [aliases\_map](https://charmhub.io/mailman3-core/configurations#aliases_map)
* [enable\_spamassassin](https://charmhub.io/mailman3-core/configurations#enable_spamassassin)
* [enable\_spf](https://charmhub.io/mailman3-core/configurations#enable_spf)
* [enable\_strict\_host\_checks](https://charmhub.io/mailman3-core/configurations#enable_strict_host_checks)
* [extra\_packages](https://charmhub.io/mailman3-core/configurations#extra_packages)
* [hostname](https://charmhub.io/mailman3-core/configurations#hostname)
* [install\_keys](https://charmhub.io/mailman3-core/configurations#install_keys)
* [install\_sources](https://charmhub.io/mailman3-core/configurations#install_sources)
* [nagios\_context](https://charmhub.io/mailman3-core/configurations#nagios_context)
* [nagios\_servicegroups](https://charmhub.io/mailman3-core/configurations#nagios_servicegroups)
* [package\_status](https://charmhub.io/mailman3-core/configurations#package_status)
* [sa\_http\_proxy](https://charmhub.io/mailman3-core/configurations#sa_http_proxy)
* [site\_owner](https://charmhub.io/mailman3-core/configurations#site_owner)
* [spamassassin\_policy](https://charmhub.io/mailman3-core/configurations#spamassassin_policy)
* [spf\_config](https://charmhub.io/mailman3-core/configurations#spf_config)
* [ssl\_cert](https://charmhub.io/mailman3-core/configurations#ssl_cert)
* [ssl\_key](https://charmhub.io/mailman3-core/configurations#ssl_key)
* [ssl\_policy\_map](https://charmhub.io/mailman3-core/configurations#ssl_policy_map)
* [transport\_maps](https://charmhub.io/mailman3-core/configurations#transport_maps)

[Learn about configurations >](https://juju.is/docs/juju/configuration#heading--application-configuration)

* aliases\_map | string

  Map various aliases to existing mailing lists. e.g.
  also-my-list@lists.local my-list@lists.local
* enable\_spamassassin | boolean

  Default: True

  Enable Spamassassin mail filter
* enable\_spf | boolean

  Default: True

  Enable Postfix SPF extensions
* enable\_strict\_host\_checks | string

  Enable strict hostname checks in smtpd\_recipient\_restrictions.

  Set to "true" to enable, or "test" to enable checks in test mode.

  Test mode will prefix the restrictions with warn\_if\_reject, so that
  potential rejections will appear in the server logs but won't actually
  reject messages.
* extra\_packages | string

  Space separated list of extra deb packages to install.
* hostname | string

  Use specified hostname/mailname.
* install\_keys | string

  List of signing keys for install\_sources package sources, per charmhelpers standard format (a yaml list of strings encoded as a string). The keys should be the full ASCII armoured GPG public keys. While GPG key ids are also supported and looked up on a keyserver, operators should be aware that this mechanism is insecure. null can be used if a standard package signing key is used that will already be installed on the machine, and for PPA sources where the package signing key is securely retrieved from Launchpad.
* install\_sources | string

  List of extra apt sources, per charm-helpers standard format (a yaml list of strings encoded as a string). Each source may be either a line that can be added directly to sources.list(5), or in the form ppa:<user>/<ppa-name> for adding Personal Package Archives, or a distribution component to enable.
* 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
* package\_status | string

  Default: install

  The status of service-affecting packages will be set to this value in the dpkg database. Valid values are "install" and "hold".
* sa\_http\_proxy | string

  Define a http(s) proxy in /etc/default/spamassassin

  This will add http\_proxy and https\_proxy environment variables in Spamassassin's /etc/default file
  and allow sa-update cronjob to update rulesets though a http(s)\_proxy.

  A valid entry would be http://proxy.host.name:3128
* site\_owner | string

  Default: admin@changeme.internal

  E-mail used by mailman for e-mail verifications etc.
* spamassassin\_policy | string

  Custom Spamassassin policies
* spf\_config | string

  Default: debugLevel = 1
  defaultSeedOnly = 1
  HELO\_reject = SPF\_Not\_Pass
  Mail\_From\_reject = Fail
  PermError\_reject = False
  TempError\_Defer = False
  skip\_addresses = 127.0.0.0/8,::ffff:127.0.0.0/104,::1/128

  Custom SPF configuration
* ssl\_cert | string

  Override SSL/TLS certificate, defaults to empty which uses the snakeoil
* ssl\_key | string

  Override SSL/TLS key, defaults to empty which uses the snakeoil
* ssl\_policy\_map | string

  Policy map to enforce TLS/SSL
* transport\_maps | string

  Optional lookup tables with mappings from recipient address to
  message delivery transport or next-hop destination.

  http://www.postfix.org/postconf.5.html#transport\_maps