Greetings, I use TLS and SRTP on all my extensions. I use openssl and distribute my root certificate to my endpoints. Most of the time my calls work just fine. Sometimes I receive a repeating error in my log files however, and I don?t know why this is happening. I?m wondering if this is really from the TLS connection for SIP, or an underlying error with SRTP decoding.. I sometimes get this message in the log when things seems to be working fine. Is there a better way to debug exactly why I?m getting this error? Sometimes I have dozens of these errors in a row. My openssl certificate chain checks out fine with openssl verify command .. [2015-10-26 12:23:42] WARNING[9915] tcptls.c: FILE * open failed! [2015-10-26 12:23:42] VERBOSE[9916] tcptls.c: == Problem setting up ssl connection: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20151026/7c9a8eb8/attachment.html>