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<blockquote type="cite"
cite="mid:e7803ca3-7959-ad79-26aa-a13c25cf2a57@jangulo.net">
<blockquote type="cite" style="color: #007cff;">You could give
7zip [1] a try. According to [2], 7zz integration does not need
code changes. You'd have to deploy 7zz manually, though, as I
don't see it in EPEL either.
<br>
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<br>
RPM names are p7zip and p7zip-plugins on EPEL for Centos 8.
</blockquote>
<p>p7zip and p7zip-plugins do not provide 7zz, but 7z and 7za. Per
Nikolaos' given @decoders, Amavis tried 7z and failed.<br>
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