Hi Daniel,
Just an update, we have just restarted the SBC with the new Kamailio build using OpenSSL v1.0:
``` Jul 25 00:59:09 voicesbc1 sbc[1112]: INFO: tls [tls_init.c:639]: init_tls_h(): tls: _init_tls_h: compiled with openssl version "OpenSSL 1.0.2l 25 May 2017" (0x100020cf), kerberos support: off, compression: on ```
Now to wait and see if it reproduces. We have 2 SBCs, both Debian9+Kamailio5.0.2:
voicesbc1: Kamailio compiled with OpenSSL v1.0 voicesbc2: Kamailio compiled with OpenSSL v1.1
Until now, we have had to restart kamailio every time the issue appeared on any/both servers, let's see what happens in the next couple days.