This is a duplicate from the following question:
https://help.univention.com/t/bind9-fails-to-start-automatically/20758
I had the same issue!
I have a large blacklist of domains and it seems that bind needs too long for samba to be able to connect to it.
I now increased the timeout specified in the following line of /usr/lib/univention-bind/samba4:
/usr/bin/timeout 30 /bin/sh -c "until rndc -p 953 status | grep --quiet 'server is up and running'; do sleep 1;
--- /usr/lib/univention-bind/samba4
+++ /usr/lib/univention-bind/samba4
@@ -55,7 +55,7 @@
/usr/sbin/rndc -p 953 stop
;;
wait-for-startup)
- /usr/bin/timeout 30 /bin/sh -c \
+ /usr/bin/timeout 270 /bin/sh -c \
"until rndc -p 953 status | grep --quiet 'server is up and running'; do sleep 1; done"
;;
esac
Same Problem Description here:
https://bugzilla.redhat.com/show_bug.cgi?id=1069678