DNS Scavening not working

IF DNS Scavenging is enabled on the server , configured  the Scavenging Cycle and Aging (No Refresh and Refresh interval)  but old records are not deleting yet,

type in cmd dnscmd /zoneinfo test.com

you will see ....Ptr          = 000000000031D480               MaxCount     = 1                AddrCount    = 1                                Server[0] => af=2, salen=16, [sub=0, flag=00000000] p=13568, addr=192.168.1.1

Here you notice the IP address 192.168.1.1.

This is the IP address of the server which has the permission to scavenge the zone (Most likely this could be a server which is no longer existing)
If this is not the IP address of the server which on which you have configured Scavenging then we need to change that.

To change the Scavenging server for a zone, run the command:

dnscmd /zoneresetscavengeservers test.com <Ip of the current DNS Server>

where <IP of the current DNS Server> is the IP address of the DNS Server where Scavenging is configured.

Source

Windows DNS Command Line

Query DNS forest-wide partition replica 
dsquery * "DC=ForestDNSZones,dc=forestRootDomain

Add a CNAME record to DNS 
dnscmd %server% /recordadd %zone% %AliasName% CNAME %HostnameAliasing%

Query zone resource records on a Microsoft DNS server
wmic /namespace:\\root\microsoftdns /node:%server% path MicrosoftDNS_ResourceRecord WHERE ContainerName='%zone_name%'

nslookup with debug information 
nslookup -debug %IP%

DSQuery authorised DHCP Servers
Dsquery * "cn=NetServices,cn=Services,cn=Configuration, DC=forestRootDomain" -attr dhcpServers

Enumerate all records from a DNS zone
dnscmd /enumrecords @ /additional /continue > DNS_all.txt

Lookup SRV records from DNS
nslookup -type=srv _ldap._tcp.dc._msdcs.{domainRoot}

DNS Information
for /f %i in ('dsquery server -domain %userdnsdomain% -o rdn') do dnscmd %i /info

DNS Zone Detailed information
dnscmd /zoneinfo %userdnsdomain%

DNS Zones in AD
for /f %i in ('dsquery server -o rdn') do Dsquery * -s %i domainroot -filter (objectCategory=dnsZone)

Enumerate DNS Server Zones
for /f %i in ('dsquery server -o rdn') do dnscmd %i /enumzones

Print DNS Zones 
dnscmd DNSServer /zoneprint DNSZone

Add a host record in DNS
dnscmd %dnsserver% /recordadd %zone% %relative_name% A %ip%

Find aging records from an enumerated zone
find /i "aging:" DNS_all.txt > DNS_aging.txt

DNS Scavenging check, based on the output of aging records from dnscmd.exe
cscript DNSScavengeTest.wsf /f:DNS_aging.txt

Query DNS objects from the directory
dsquery * DC=,CN=MicrosoftDNS,cn=System,dc=

Start DNS scavenging 
dnsmd /startscavenging

Delete a host record from DNS
dnscmd %server% /recorddelete %zone% @ A %IP%

Determine the DNS suffix search list set through policy for a computer
reg query "\\%Computer%\HKEY_LOCAL_MACHINE\software\policies\microsoft\Windows NT\DNSClient" /v SearchList

Query for the zones hosted on a Microsoft DNS server 
wmic /namespace:\\root\microsoftdns /node:%server% path MicrosoftDNS_Zone

Find DNS Forwarder information from dnscmd output
for %b in (DNS*.txt) do @for /f "skip=2 delims=[]" %i in ('"find /i /N "Forwarders:" %b"') do @for /f "skip=2 delims=[]" %m in ('"find /i /N "Command completed successfully." %b"') do @for /f %p in ('set /a %m-%i') do echo tail -%p %b

List primary reverse lookup zones from a DNS server
dnscmd %server% /EnumZones /secondary /reverse

List allowed secondary servers for the specified zone
dnscmd %server /zoneinfo %ip%.in-addr.arpa SecondaryServers

Source

Lync DNS Records

Internal

lyncdiscoverinternal.contoso.com  (A record for the Autodiscover service for internal connections directed to internal Web services)

_sipinternaltls._tcp.contoso.com (SRV record for internal TLS connections)

_sipinternal._tcp.contoso.com (SRV record for internal TCP connections)

sipinternal.contoso.com (A record for the Front End pool)

Extarnal

lyncdiscover.contoso.com (A record for the Autodiscover service for external Web services)

_sip._tls.contoso.com (SRV record for external TCP connections)

sip.contoso.com (A record for the Front End pool when the client is on the internal network; A record for the Access Edge Server when the client is external with no VPN access)

sipexternal.contoso.com (A record for the Access Edge Server when the client is external with no VPN access)

Lync Dns records

Internal

lyncdiscoverinternal.contoso.com (A record for the Autodiscover service for internal connections directed to internal Web services)

_sipinternaltls._tcp.contoso.com (SRV record for internal TLS connections)

_sipinternal._tcp.contoso.com (SRV record for internal TCP connections)

sipinternal.contoso.com (A record for the Front End pool)

Extarnal

lyncdiscover.contoso.com (A record for the Autodiscover service for external Web services)

_sip._tls.contoso.com (SRV record for external TCP connections)

sip.contoso.com (A record for the Front End pool when the client is on the internal network; A record for the Access Edge Server when the client is external with no VPN access)

sipexternal.contoso.com (A record for the Access Edge Server when the client is external with no VPN access)

Add WPAD to DNS server, Proxy server

run in powershell on DNS server (Domain Controller):

dnscmd /config /globalqueryblocklist wpad

or from Regedit:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\ParametersGlobalQueryBlockLIst add wpad to value data.

Add WPAD to DNS server, Proxy server

run in powershell on DNS server (Domain Controller):

dnscmd /config /globalqueryblocklist wpad

or from Regedit:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DNS\ParametersGlobalQueryBlockLIst remove wpad 

ADD A record to DNS Server

Import-Module DNSShell

$dns="dns server ip"

$zone="test.com

Import-Csv C:\tmp\import.csv

 | foreach {

    dnscmd $dns /recordadd $zone $($_.name) A $($_.ip)

}