The destination server was using port 8443. As soon as I ran the server on port 443, squid verified the cert and everything was OK. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/SSL-certificate-verify-failed-tp3394299p3414194.html Sent from the Squid - Users mailing list archive at Nabble.com.