confusion with https://www.howtoforge.com/tutorial/securing-ispconfig-3-with-a-free-lets-encrypt-ssl

Ok I found out thats not compatible with acme.sh. But sorry I used is, at least the part to use the cert for postfix.
my ispconfig works fine secure wit a letsencryt cert from may 20 2025, browser says secure. https:/server.domain.tld works fine, brows says secure tells ne useing same cert.
But after trying the cert for postfix it replaces the certs to a link where is now cert. Postfix starts fine, but dovecot complains.Reverting the link to the certs fixes that. But these certs are selfsigned, so i.e. https://de.ssl-tools.net/ complains uses tls but with self signed cert.
How to fix that? The certs for server and ispconfig are in /root/.acme.sh/server.domain.tld_ecc. But I can not find how these are linked to ipspconfig oder server

 

Solved
found this https://www.howtoforge.com/securing...server-with-a-valid-lets-encrypt-certificate/
modified the part cert for postfix and dovecot to my need and as my tests to now it works

Regards
Rainer