“No match for domain in DNS SRV results” – Federation to additional SIP Domain

We have to be extra careful when we deal with additional SIP domains and we want these domains to be able to communicate to federated partners. Most of the deployments only have DNS records for the main SIP domain, and because of this the federation for the additional domains won’t work. For example, if we have sip.contoso.com and… Read more

Lync doesn’t generate Address Book files and you receive an error 404 when using the Test-CsAddressBookService cmdlet

Some time ago we got a case where a customer said that the users of a single pool couldn’t download Lync Address Book. The error that the users were receiving was: “Cannot synchronize with the corporate address book because the file could not be found.” When testing with the cmdlet Test-CsAddressBookService, the customer received the… Read more

Renewing Lync Server 2010/2013 Certificates

One common thing that is asked by customers is: “How do I renew Lync Server Certificates?” If not asked, then sometimes we get a customer with certificate issues or even with Lync services off because of an error in certificates creation/renew (or even people that forget to renew the certificate). So, moving on, we decided… Read more

Configuring ARR for Lync Server

Sometime ago we got into a situation where a customer deployed ARR as a Reverse Proxy for Lync Server. This was new to us. We found some articles on the Internet showing how to configure it, but none of them were clear enough. We wanted to understand this better, so we configured ARR from zero… Read more