[SR-Users] Problem with TLS config

Hi List i'm trying config sip with tls module, my config for module in kamailio.cfg is this: #!ifdef WITH_TLS # ----- tls params ----- modparam("tls", "config", "/etc/kamailio/tls.cfg") #!endif in tls.cfg is this: [server:192.168.1.1:5061] method = SSLv23 verify_certificate = no require_certificate = no private_key = /etc/kamailio/key.pem certificate = /etc/kamailio/cert.pem [client:default] verify_certificate = no require_certificate = no But when a reload kamailio i get the follow error: Mar 18 16:36:50 softswitch /usr/sbin/kamailio[23330]: ERROR: tls [tls_domain.c:906]: load_private_key(): TLSs<default>: Unable to load private key file '/etc/kamailio/cert.pem' Why try to find '/etc/kamailio/cert.pem' for a private key??