Lync Autodiscover SRV Records not possible


Sometimes you come across a situation when an SRV record cannot be created either externally on internally (for whatever reason)

Don’t despair as the clever folk at Microsoft development have implemented additional options should Lync Communicator fails to reach the Lync FrontEnd Server by means of the SRV record.

Discovery options are as follows:-

1. SRV
2. sipinternal.
3. sipexternal.
4. sip.

So by simply adding an A record as above and pointing it to the Edge Public interface (where the Access Edge role resides) you can get around using SRV. Do keep in mind that this will add a few seconds to the logon process.


Also keep in mind that some third party vendors have created product that uses SRV records to log in, of course these may need consideration. 

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About Paul B

My name is Paul Bloem and I am employed at Lexel Systems in New Zealand as a Principal Consultant for Unified Communications. I have been working on enterprise voice solutions for over 20 years. My first 10 years were spent working for a Telco in South Africa (Telcom SA). This is where all the groundwork happened as I was exposed to just about every aspect of telecommunication you could imagine. I develop an interest in PBX technologies and eventually became the go-to guy. Next, I had a 10 year run at Siemens South Africa, most of my time there was as a Technical Trainer. During this time VoIP hit the world stage, I had the privilege of introducing VoIP both as H.323 and later SIP across the Siemens HiPath 4000 solution stack. In 2008 I immigrated to New Zealand with my newly attained MCSE, I was ready to go where no PBX Techie had gone before. I was employed to explore OCS 2007 and that was pretty much the beginning of the end for me. I have been working on OCS and Lync ever since. My current role focuses exclusively on Lync and associated technologies.. That includes pre-sales, consulting, architecture and design, training and support. I even get to play in the development space from time to time - focus on play ;-) I was nominated as a Microsoft VTSP for Lync early in 2013 and also awarded Microsoft's MVP award for Lync in 2014.
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