How long does NIOS queue deferred DDNS updates?

[#1]

Anyone know how long NIOS keeps deferred DDNS updates in the queue? I assume there is either a queue length limit or time-based limit. I know I can delete them, I just wanted to know how long they stay in the queue if Infoblox can't send them. I have over 24,000 deferred updates queued up:

Infoblox > show dhcp_dddns_updates

Found 24033 deferred DDNS updates in the queue.

ASSIGNED IP        GRID MEMBER               NETWORK VIEW    DEFERRED FORWARD UPDATE                  DEFERRED REVERSE UPDATE            
===============    ======================    ============    ================================         ================================   
10.1.72.237        infoblox.localdomain      default         REMOVE FIPC5037.company.com              REMOVE 237.72.1.10.in-addr.arpa.   
10.1.72.239        infoblox.localdomain      default         ADD KEFPORI2.company.com                 ADD 239.72.1.10.in-addr.arpa.      
10.4.164.20        infoblox.localdomain      default         REMOVE Stavanger.company.com             REMOVE 20.164.4.10.in-addr.arpa.   
10.112.228.240     infoblox.localdomain      default         ADD RNPC151E0.company.com                ADD 240.228.112.10.in-addr.arpa.   
.
.

[#2]

Paul,

After my co-worker and I reviewed your post, it is best to escalate to our support department as it requires analysis of your syslog.  Look at page 1442 of the NIOS 8.6 admin guide for a description on the DHCP DDNS Updates Deferred description.

Thomas