pdns-recursor help

I am new to Power DNS and am attempting to setup a Power DNS recursor
server.  I am using Debian bookworm and I have installed the 
pdns-recursor
package.  The server is listening and dig can connect to the server,
but dig returns a status of SERVFAIL.  What should I look at?  What am
I missing?

Ahh, finally figured out how to get queries into syslog.  Here is what I 
am
seeing there:

2024-02-17T08:11:50.536920+00:00 zoot-bookworm pdns_recursor[10110]: 
msg="Question" subsystem="syncres" level="0" prio="Info" tid="2" 
ts="1708157510.535" ecs="" mtid="1" proto="udp" qname="web.stanford.edu" 
qtype="A" remote="10.0.0.32:55021"

2024-02-17T08:11:50.846316+00:00 zoot-bookworm pdns_recursor[10110]: 
msg="Sending SERVFAIL during resolve" error="Server Failure while 
retrieving DS records for edu" subsystem="syncres" level="0" 
prio="Notice" tid="2" ts="1708157510.845" ecs="" mtid="1" proto="udp" 
qname="web.stanford.edu" qtype="A" remote="10.0.0.32:55021"

2024-02-17T08:11:50.846977+00:00 zoot-bookworm pdns_recursor[10110]: 
msg="Answer" subsystem="syncres" level="0" prio="Info" tid="2" 
ts="1708157510.846" additional="1" answers="0" dotout="0" ecs="" 
mtid="1" netms="306.381000" outqueries="28" proto="udp" 
qname="web.stanford.edu" qtype="A" rcode="2" rd="1" 
remote="10.0.0.32:55021" tcpout="0" throttled="0" timeouts="0" 
totms="310.015000" validationState="Indeterminate"

Thanks in advance for your help,

Bill

-- 
My heart is warm with the friends I make,
   And better friends I'll not be knowing,
Yet there isn't a train I wouldn't take,
   No matter where it's going.

Edna St Vincent Millay