DNS Requirements for Lync Online

For each DNS domain that will be used with Lync Online, several external DNS CNAME records need to be added to support the client Autodiscover service. Table 28.5 shows the external DNS CNAME records that are needed, where <DomainName> is the external DNS domain that will be used with Lync Online.

Table 28.5. External DNS CNAME Records Used to Support Autodiscover with Lync Online

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In addition to the CNAME records used for authenticated clients, several external SRV records might be required to support additional scenarios. Specifically, one external SRV record is needed to allow Autodiscover for anonymous (unauthenticated) ...

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