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mailu/docs
bors[bot] 0839490beb
Merge #2479
2479: Rework the anti-spoofing rule r=mergify[bot] a=nextgens

## What type of PR?

Feature

## What does this PR do?

We shouldn't assume that Mailu is the only MTA allowed to send emails on behalf of the domains it hosts.
We should also ensure that it's non-trivial for email-spoofing of hosted domains to happen

Previously we were preventing any spoofing of the envelope from; Now we are preventing spoofing of both the envelope from and the header from unless some form of authentication passes (is a RELAYHOST, SPF, DKIM, ARC)

### Related issue(s)
- close #2475

## Prerequisites
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>
2 years ago
..
_templates Restore VERSION_TAG template 6 years ago
assets removing unneeded image 4 years ago
compose Fix a bunch of typos 2 years ago
contributors Add development documentation again 2 years ago
kubernetes/mailu simplify 3 years ago
swarm Fix a bunch of typos 2 years ago
.env Add deploy settings for server 6 years ago
Dockerfile Process code review remarks 3 years ago
antispam.rst Merge #2328 2 years ago
arm_images.rst Fix a bunch of typos 2 years ago
cli.rst Fix small typo in config-import example template 2 years ago
conf.py Set language to English for sphinx in conf.py. 3 years ago
configuration.rst Merge #2328 2 years ago
database.rst Update database.rst 2 years ago
demo.rst Fixed small typo 5 years ago
dns.rst Fix a bunch of typos 2 years ago
docker-compose.yml Make docker-compose.yml for setup and docs development friendly 6 years ago
faq.rst Fix a bunch of typos 2 years ago
features.rst remove service status "feature" 4 years ago
general.rst Update general.rst 2 years ago
index.rst Add anti-spoofing to the feature list 2 years ago
maintain.rst Documentation: 2 years ago
nginx.conf Build the documentation as a Docker image 6 years ago
releases.rst Fix a bunch of typos 2 years ago
requirements.txt Added missing extension in conf.py. Added missing library in requirements.txt. Sphinx is only compatible with docutils<0.17 3 years ago
reverse.rst Fixed error in reverse.rst and remove unneeded example block. 2 years ago
setup.rst Merge branch 'master' into feat-switch-buildx 2 years ago
webadministration.rst Fix a bunch of typos 2 years ago