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How to check DNS SRV records for Federation, Edge and Exchange

Written May 2018. Microsoft changes these admin screens often, so the screenshots below may not match what you see today. The sequence of steps is usually still correct — if something looks wrong, tell us and we'll update it.
  • Just search the “cmd” in the search box.
  • Open it.
  • Type “nslookup”, and then press ENTER.
  • It’ll connect to a dns server.
  • To connect to google dns server, type “server 8.8.8.8” and press enter.
  • It’ll then be connected to googles dns server.
  • Type “set type=al” and press enter.
  • Type “_sipfederationtls._tcp.communicationsquare.com”.
  • Entering the above command will give the SRV records of Communication Square federation.
  • For different federation just change the domain.

https://technet.microsoft.com/en-us/library/gg398680(v=ocs.15).aspx

  • For Edge the following command will be used.
  • “_sip._tls.communicationsquare.com”

https://technet.microsoft.com/en-us/library/bb870389(v=office.12).aspx

  • For Exchange Auto discover the following command will be used.
  • “_autodiscover._tcp.communicationsquare.com”

https://blogs.technet.microsoft.com/rmilne/2014/10/02/how-to-check-exchange-autodiscover-srv-record-using-nslookup/

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