What is default_crl_days in OpenSSL and recommended days?

I’m new and I’m trying to understand default_crl_days. The default is 30 days thus does it mean after 30 days, the CRL list can no longer be trusted? If so, do we need to generate a new list before 30 days is up?
And what would be the reco… Continue reading What is default_crl_days in OpenSSL and recommended days?