Hi Guys I am getting a strange tls error and not sure why my kamailio config is #!define WITH_TLS #!ifdef WITH_TLS enable_tls=1 listen=tls:1.2.3.4:5061 /* upper limit for TLS connections */ tls_max_connections=2048 #!endif #!ifdef WITH_TLS loadmodule "tls.so" #!endif #!ifdef WITH_TLS # ----- tls params ----- modparam("tls", "config", "/usr/local/etc/kamailio/tls.cfg") #!endif ###tls.cfg [server:default] method = TLSv1.2+ verify_certificate = yes require_certificate = yes private_key = /usr/local/etc/kamailio/certs/privkey.pem certificate = /usr/local/etc/kamailio/certs/cert.crt ca_list = /usr/local/etc/kamailio/certs/cacert.pem [client:default] method = TLSv1.2+ verify_certificate = yes require_certificate = yes private_key = /usr/local/etc/kamailio/certs/privkey.pem certificate = /usr/local/etc/kamailio/certs/cert.crt ca_list = /usr/local/etc/kamailio/certs/cacert.pem Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8708]: INFO: {1 1 OPTIONS 84bbc013-5cd1-43a7-a240-106ec00aa628} <core> [core/tcp_main.c:2948]: tcpconn_1st_send(): quick connect for 0x7f776544c978 sock 13 Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8711]: ERROR: tls [tls_server.c:1283]: tls_h_read_f(): protocol level error Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8711]: ERROR: tls [tls_util.h:42]: tls_err_ret(): TLS accept:error:14094418:SSL routines:ssl3_read_bytes:tlsv1 alert unknown ca Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8711]: ERROR: tls [tls_server.c:1287]: tls_h_read_f(): source IP: 1.2.3.4 Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8711]: ERROR: tls [tls_server.c:1290]: tls_h_read_f(): destination IP: 1.2.3.4 Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8711]: ERROR: <core> [core/tcp_read.c:1473]: tcp_read_req(): ERROR: tcp_read_req: error reading - c: 0x7f7765419b50 r: 0x7f7765419c78 (-1) Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8712]: ERROR: tls [tls_server.c:1283]: tls_h_read_f(): protocol level error Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8712]: ERROR: tls [tls_server.c:1287]: tls_h_read_f(): source IP: 1.2.3.4 Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8712]: ERROR: tls [tls_server.c:1290]: tls_h_read_f(): destination IP: 1.2.3.4 Sep 24 10:31:07kama1 /usr/local/sbin/kamailio[8712]: ERROR: <core> [core/tcp_read.c:1473]: tcp_read_req(): ERROR: tcp_read_req: error reading - c: 0x7f776544c978 r: 0x7f776544caa0 (-1)