Dear Michal We are running Stunnel version 5.72 as TLS proxy for internal API in server mode on Windows. The server has no direct internet access. [my_tls_proxy] sslVersionMin = TLSv1.2 accept = 8443 connect = 1234 cert = mycert.pem OCSPaia = no OCSPrequire = no Is there a way to disable the OCSP connection attempts? The log is full of: 2024.08.14 16:20:26 LOG5[32]: OCSP: Connecting the AIA responder " http://ocsp.globalsign.com/gsrsaovsslca2018" 2024.08.14 16:20:27 LOG3[28]: s_connect: connect 104.18.21.226:80: Connection refused (WSAECONNREFUSED) (10061) Many thanks in advance for your reply. BR, Daniel