CentOS 7.1503 installed. Installed Samba 4 from sernet: Version 4.1.17-SerNet-RedHat-11.el7 (to be configured). The samba wiki Readme First page states, "Some distributions like . . . Red Hat Enterprise Linux (and clones), ship BIND9 packages with disabled GSS-SPNEGO option, which is required for signed DNS updates when using BIND as DNS backend on your Samba DC. This circumstance requires to self compile BIND9." Is there any way to use a yum command to install Bind9 with gss-spnego enabled? I'm worried about installing from source and creating future problems when trying to update other CentOS packages that may be affected by the source install of Bind9. Is it safe to obtain a bind9 source tarball for install on an rpm-based CentOS 7 server? If anyone has installed Bind for use with Samba 4 on CentOS 7, please let me know what worked. Thanks for your time and patience.