Hi! Openssl only validates certificates only on TLS layer - e.g. against list of trusted CAs. But SIP also requires validation of the certificates name against the SIP domain. Are there any means in pjsua-API to implement this? e.g. are there any callbacks to make this applicaton-layer validation? regards klaus PS: http://tools.ietf.org/html/draft-ietf-sip-domain-certs-04 describes what I am talking about