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bors[bot] 7efce99769
Merge #1902 
1902: Make smtp_tls_policy_maps easily configurable r=mergify[bot] a=nextgens

## What type of PR?

Feature

## What does this PR do?

- Make smtp_tls_policy_maps easily configurable. This is useful to force TLS verification of specific destinations (or relays).
We should probably discuss what's on the list by default. I have found a top100 list online, ran it through a script to check all the records and found 90 destinations we could use.
- disable TLS session tickets (this reduces the PFS window from 1day to 1h)
- enable system CAs by default (to allow for OUTBOUND_TLS_LEVEL above encrypt without additional overrides)

### Related issue(s)
- closes #1558 
- #707

## Prerequistes
Before we can consider review and merge, please make sure the following list is done and checked.
If an entry in not applicable, you can check it or remove it from the list.

- [x] In case of feature or enhancement: documentation updated accordingly
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
 		3 years ago
.github Give docker containers in each test one more minute for starting. 3 years ago
core add additional options to make DANE easier 3 years ago
docs Merge branch 'master' of https://github.com/Mailu/Mailu into tls_policy_map 3 years ago
optional Rollback to alpine 1.12 3 years ago
setup Set default message rate limit to 200/day 3 years ago
tests Update Alpine version from 3.10 to 3.14 3 years ago
towncrier Merge branch 'master' of https://github.com/Mailu/Mailu into tls_policy_map 3 years ago
webmails Add catch_workers_output to php-rainloop.conf 3 years ago
.gitignore use different alpine image for arm, add config for php images+arm 5 years ago
.mergify.yml Update list of trusted authors. 3 years ago
AUTHORS.md Improve changelog and release texts for 1.8 4 years ago
CHANGELOG.md enhanced security changelog entry and added recommendation to recreate secret_key 3 years ago
CODE_OF_CONDUCT.md Add a code of conduct, fixes #319 7 years ago
CONTRIBUTING.md Update "the development guidelines" hyperlink 5 years ago
ISSUE_TEMPLATE.md Remove <> tags as they break markdown rendering 4 years ago
LICENSE.md Rename the freeposte/mailu directory and database 8 years ago
PULL_REQUEST_TEMPLATE.md Template: Update link to changelog entry documentation for pull requests 3 years ago
README.md Update README.md 6 years ago
bors.toml Switch to github actions for CI/CD 3 years ago
pyproject.toml Fix the package setting 5 years ago

README.md

Mailu

Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer and as in free speech), open to suggestions and external contributions. The project aims at providing people with an easily setup, easily maintained and full-featured mail server while not shipping proprietary software nor unrelated features often found in popular groupware.

Most of the documentation is available on our Website, you can also try our demo server before setting up your own, and come talk to us on Matrix.

Features

Main features include:

  • Standard email server, IMAP and IMAP+, SMTP and Submission
  • Advanced email features, aliases, domain aliases, custom routing
  • Web access, multiple Webmails and administration interface
  • User features, aliases, auto-reply, auto-forward, fetched accounts
  • Admin features, global admins, announcements, per-domain delegation, quotas
  • Security, enforced TLS, Letsencrypt!, outgoing DKIM, anti-virus scanner
  • Antispam, auto-learn, greylisting, DMARC and SPF
  • Freedom, all FOSS components, no tracker included

Domains

Contributing

Mailu is free software, open to suggestions and contributions. All components are free software and compatible with the MIT license. All specific configuration files, Dockerfiles and code are placed under the MIT license.