I’m testing Let’s Encrypt certificates with postfix mail server and it works fine (well, still need to figure out why posttls-finger says “Untrusted TLS connection established”, but the cert itself technically works fine). What I’m currently trying to setup is a combination of LE valid cert + DA…

How to keep the cert hash throughout renewal process?

tlussnig December 16, 2015, 10:16pm 2

This is not possible. But you can use the same key:

Also look at:

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