Urgent! Need all clients to pick up the change to a SRV Record in DNS!

I have changed the server name within a SRV record in DNS; however, clients don't seem to be picking it up.  How can I force all clients (3000+ PCs) to see this change ASAP?

I have been testing from workstations by doing the following:
nslookup
set type=srv
_sip._tls.company.com

However, all of the clients are still picking up the old server name in the SRV record.  The record was changed 30 minutes ago.

I have tried ipconfig /flushdns with no avail.
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adkinsmatthewAsked:
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Chris DentPowerShell DeveloperCommented:

If they get that record using nslookup then you need to look at what you have on the DNS server they query. It may simply be that you need to force replication to the server they're executing the query against.

Once done, flushdns should have them find the new record on the client.

HTH

Chris
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adkinsmatthewAuthor Commented:
OK...replication it is.  I just figured it would occur faster than that.   I waited over 45 minutes before any clients began to receive the change.
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