Merge #2593

2593: Drop postfix rsyslog localhost messages with IPv6 address r=mergify[bot] a=UbiquitousBear

## What type of PR?


Enhancement

## What does this PR do?

### Related issue(s)
#2594


## 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
- [x] Unless it's docs or a minor change: add [changelog](https://mailu.io/master/contributors/workflow.html#changelog) entry file.


Co-authored-by: Shamil Nunhuck <shamil@shamil.co.uk>

core/postfix/conf/rsyslog.conf

@@ -30,6 +30,7 @@ module(load="imuxsock")
 
 # Discard messages from local test requests
 :msg, contains, "connect from localhost[127.0.0.1]"  ~
+:msg, contains, "connect from localhost[::1]"  ~
 
 {% if POSTFIX_LOG_FILE %}
 # Log mail logs to file

towncrier/newsfragments/2594.feature

@@ -0,0 +1 @@
+Drop postfix rsyslog localhost messages with IPv6 address