Install Mox - a secure all-in-one email server - with DANE and MTA_STS support on Debian 12

[RobSlgm]

No description provided.

[svenja11]

Thank you for your contribution @RobSlgm! I read through your tutorial and most of it looked good already but I did make some updates. Please let me know if the changes I made are fine with you. If they are, I will mark this PR as ready.

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I have read and understood the Contributor's Certificate of Origin available at the end of
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and I hereby certify that I meet the contribution criteria described in it.
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[RobSlgm]

I have read and understood the Contributor's Certificate of Origin available at the end of
https://raw.githubusercontent.com/hetzneronline/community-content/master/tutorial-template.md
and I hereby certify that I meet the contribution criteria described in it.
Signed-off-by: Robert Bill, rob@slgm.ch

[RobSlgm]

Thank you very much for editing my submission. I appreciate the improvements and it is definitely much more readable.