We have a couple of top level domains in the company but not all of them are 
supported by those that process certificate requests. I don't know if and to 
what extent there is a name constraint, if I try to get a certificate for 
<mainframe_domain.com> they simply reject it because it's not the "correct" 
domain name.

Well, based on the replies, I think I'd best not include CRL/OCSP and test this 
option. After all, it's just to enable SSL/TLS in our IP communication. Only 
for internal servers and only for a limited group of people. So less work on it 
would be better.

Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen,
Berry van Sleeuwen
Flight Forum 3000 5657 EW Eindhoven

-----Original Message-----
From: Linux on 390 Port <[email protected]> On Behalf Of Alan Altmark
Sent: Monday, June 24, 2019 1:30 PM
To: [email protected]
Subject: Re: Building a Certificate Authority


Which means you're not going to be a CA with all the rights, privileges, and 
responsibilities applying thereto, so don't worry about It.

It sounds like they have a commercial signing certificate which has name 
constraints, and your domain names aren't in scope.  That's weird.

Regards,
Alan Altmark
IBM

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