well, country, province, city org and email are identical
(most of these CAs where created well before we started using pfsense,
all of them where created using easy rsa)
so yes, if pfsense tries to look at the subject to find out if they are related this could indeed
be the reason.
while using the same email address might not have been ideal, i don't think it's possible to change it afterwards, so i'm stuck with it…
regards,
albert dengg