[cups] Authentication Problem

I have set up an SMB printer (CentOS 7) but am having trouble with 
authentication. When I submit a job, the queue shows it is being held 
for authentication. There seems to be no way to authenticate but in any 
case I want users to be able to print with no authentication. I cannot 
figure out how to configure cupsd.conf to remove the authentication 
requirement. I have played with some of the parameters but noting seems 
to help. Here is my current config, FWIW:

MaxLogSize 0
LogLevel warn
Listen localhost:631
Listen /var/run/cups/cups.sock
Browsing On
BrowseLocalProtocols dnssd
DefaultAuthType None
WebInterface Yes
<Location />
   Order allow,deny
</Location>
<Location /admin>
   Order allow,deny
</Location>
<Location /admin/conf>
   AuthType Default
   Require user @SYSTEM
   Order allow,deny
</Location>
<Policy default>
   JobPrivateAccess default
   JobPrivateValues default
   SubscriptionPrivateAccess default
   SubscriptionPrivateValues default
   <Limit Create-Job Print-Job Print-URI Validate-Job>
     Order allow,deny
   </Limit>
   <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job 
Purge-Jobs Set-
Job-Attributes Create-Job-Subscription Renew-Subscription 
Cancel-Subscription Ge
t-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job 
Resume-Job
Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document>
#    Require user @OWNER @SYSTEM
     Order allow,deny
   </Limit>
   <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer 
CUPS-Add-Modify-Class CUPS-
Delete-Class CUPS-Set-Default CUPS-Get-Devices>
     AuthType Default
     Require user @SYSTEM
     Order deny,allow
   </Limit>
   <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer 
Pause-Print
er-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs 
Deactivate-Printer Acti
vate-Printer Restart-Printer Shutdown-Printer Startup-Printer 
Promote-Job Schedu
le-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs>
     AuthType Default
     Require user @SYSTEM
     Order deny,allow
   </Limit>
   <Limit Cancel-Job CUPS-Authenticate-Job>
     Require user @OWNER @SYSTEM
     Order deny,allow
   </Limit>
   <Limit All>
     Order deny,allow
   </Limit>
</Policy>
<Policy authenticated>
   JobPrivateAccess default
   JobPrivateValues default
   SubscriptionPrivateAccess default
   SubscriptionPrivateValues default
   <Limit Create-Job Print-Job Print-URI Validate-Job>
     AuthType Default
     Order deny,allow
   </Limit>
   <Limit Send-Document Send-URI Hold-Job Release-Job Restart-Job 
Purge-Jobs Set-
Job-Attributes Create-Job-Subscription Renew-Subscription 
Cancel-Subscription Ge
t-Notifications Reprocess-Job Cancel-Current-Job Suspend-Current-Job 
Resume-Job
Cancel-My-Jobs Close-Job CUPS-Move-Job CUPS-Get-Document>
     AuthType Default
     Require user @OWNER @SYSTEM
     Order deny,allow
   </Limit>
   <Limit CUPS-Add-Modify-Printer CUPS-Delete-Printer 
CUPS-Add-Modify-Class CUPS-
Delete-Class CUPS-Set-Default>
     AuthType Default
     Require user @SYSTEM
     Order deny,allow
   </Limit>
   <Limit Pause-Printer Resume-Printer Enable-Printer Disable-Printer 
Pause-Print
er-After-Current-Job Hold-New-Jobs Release-Held-New-Jobs 
Deactivate-Printer Acti
vate-Printer Restart-Printer Shutdown-Printer Startup-Printer 
Promote-Job Schedu
le-Job-After Cancel-Jobs CUPS-Accept-Jobs CUPS-Reject-Jobs>
     AuthType Default
     Require user @SYSTEM
     Order deny,allow
   </Limit>
   <Limit Cancel-Job CUPS-Authenticate-Job>
     AuthType Default
     Require user @OWNER @SYSTEM
     Order deny,allow
   </Limit>
   <Limit All>
     Order deny,allow
   </Limit>
</Policy>

Can someone help? TIA.




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