As I'm looking at the documentation and upgrading, I just want to let you know of a few typos:

https://docker-mailserver.github.io/docker-mailserver/latest/config/best-practices/dkim_dmarc_spf/#dkim

check_pubkey = true; # you wan't to use this in the beginning

"wan't" -> "want" ?

If there is a mismatch, a warning will be omitted to the Rspamd log /var/log/supervisor/rspamd.log.

"omitted" -> "emitted"

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https://docker-mailserver.github.io/docker-mailserver/latest/config/environment/#rspamd_hfilter

increasing it's default

"it's" -> "its"

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mailserver.env

Can be used to enable or diable the Hfilter group module.

"diable" -> disable