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>
2325: postfix: wrap IPv6 CIDRs in square brackets for RELAYNETS r=mergify[bot] a=pommi
## What type of PR?
bug-fix
## What does this PR do?
This PR wraps IPv6 CIDRs in the `RELAYNETS` environment variable in square brackets for the postfix configuration.
The `RELAYNETS` environment variable is used for configuring both postfix `mynetworks` and rspamd `local_networks`. Postfix requires IPv6 addresses to be wrapped in square brackets (eg. `[2001:db8::]/64`).
When an IPv6 address is not wrapped in square brackets in the postfix configuration for `mynetworks` it results in this error while processing an incoming email from an IPv6 sender:
```
postfix/smtpd[340]: warning: 2001:db8::/64 is unavailable. unsupported dictionary type: 2001
postfix/smtpd[340]: warning: smtpd_client_event_limit_exceptions: 2001:db8::/64: table lookup problem
```
The sender sees an error and the incoming email is refused:
```
451 4.3.0 <unknown[2001:xxx:xxx:xxx:xxx:xxx:xxx:xxx]>: Temporary lookup failure
```
I tried to work around this issue by wrapping the IPv6 CIDR in square brackets in the `RELAYNETS` environment variable, but it segfaults rspamd, because it can't deal with this non-standard IPv6 notation used by postfix:
```
kernel: [4305632.603704] rspamd[1954299]: segfault at 0 ip 00007fb848983871 sp 00007ffe02cc6d1
8 error 4 in ld-musl-x86_64.so.1[7fb848948000+48000]
```
### Related issue(s)
- #2293
- #2272
## 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.
**No changelog or documentation necessary for this minor change.**
Co-authored-by: Pim van den Berg <pim@nethuis.nl>
The RELAYNETS environment variable is used for configuring both postfix
`mynetworks` and rspamd `local_networks`. Postfix requires IPv6
addresses to be wrapped in square brackets (eg. [2001:db8::]/64).
2323: Fix Postfix FileExistsError on startup r=mergify[bot] a=Pumba98
## What type of PR?
bug-fix
## What does this PR do?
I'm running mailu with the mailu helm-chart on kubernetes. Sometimes when a Pod restarts I get the following error during startup:
```
Process Process-1:
Traceback (most recent call last):
File "/usr/lib/python3.9/multiprocessing/process.py", line 315, in _bootstrap
self.run()
File "/usr/lib/python3.9/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/start.py", line 18, in start_podop
os.mkdir('/dev/shm/postfix',mode=0o700)
FileExistsError: [Errno 17] File exists: '/dev/shm/postfix'
INFO:MAIN:MTA-STS daemon starting...
```
But that does not prevent the container startup. When mails arrive it will fail with something like:
```
postfix/trivial-rewrite[94979]: warning: connect to /tmp/podop.socket: No such file or directory
postfix/trivial-rewrite[94979]: warning: table socketmap:unix:/tmp/podop.socket:transport lookup error: No such file or directory
postfix/trivial-rewrite[94979]: warning: socketmap:unix:/tmp/podop.socket:transport lookup error for "*"
```
I'm running this quick fix now since almost two months without problems. Maybe you got a better approach how to solve this, but this works fine for me.
### Related issue(s)
- none
## 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.
<!--
- [ ] In case of feature or enhancement: documentation updated accordingly
- [ ] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.
--->
**No changelog or documentation necessary for this minor change.**
Co-authored-by: Pumba98 <mail@pumba98.de>
Co-authored-by: Florent Daigniere <nextgens@users.noreply.github.com>
1441: Rsyslog logging for postfix r=mergify[bot] a=micw
## What type of PR?
enhancement
## What does this PR do?
Changes postfix logging from stdout to rsyslog:
* stdout logging still enabled
* internal test request log messages are filtered out by rsyslog
* optional logging to file via POSTFIX_LOG_FILE env variable
## 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/guide.html#changelog) entry file.
2090: fix 2086 r=mergify[bot] a=nextgens
## What type of PR?
bug-fix
## What does this PR do?
Fix a bug I've introduced in ae8db08bd
### Related issue(s)
- close#2086
Co-authored-by: Michael Wyraz <michael@wyraz.de>
Co-authored-by: Dimitri Huisman <diman@huisman.xyz>
Co-authored-by: Dimitri Huisman <52963853+Diman0@users.noreply.github.com>
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
2076: fix the default for DEFER_ON_TLS_ERROR r=mergify[bot] a=nextgens
## What type of PR?
bug-fix
## What does this PR do?
The default wasn't set anywhere
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
This will default to True and defer emails that fail even "loose"
validation of DANE or MTA-STS
It should work most of the time but if it doesn't and you would rather
see your emails delivered, you can turn it off.
1916: Ratelimit outgoing emails per user r=mergify[bot] a=nextgens
## What type of PR?
Feature
## What does this PR do?
A conflict-free version of #1360 implementing per-user sender limits
### Related issue(s)
- close#1360
- close#1031
- close#1774
## 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>
Co-authored-by: Dimitri Huisman <diman@huisman.xyz>
I have found a list of the top100 email destinations online and ran them
through a script to ensure that all of their MX servers had valid
configuration... this is the result
1885: fix 1884: always lookup a FQDN r=mergify[bot] a=nextgens
## What type of PR?
bugfix
## What does this PR do?
Fix bug #1884. Ensure that we avoid the musl resolver bug by always looking up a FQDN
### Related issue(s)
- closes#1884
Co-authored-by: Florent Daigniere <nextgens@freenetproject.org>
To make postfix override files understandable and readable, users may
want to insert empty newlines and #-commented lines in their postfix
override files too. This will now ignore such bogus-lines and not send
them to `postconf`, which produced ugly errors in the past.
closes#1098
