[A1] You have an Active Directory domain named contoso.com. Your company has a Microsoft Office 365 subscription. Twenty users are enabled for Microsoft Lync Online. The users frequently travel. The users report that they receive the following error message when they attempt to sign in to Microsoft Lync from the office: “Cannot sign in because the server is temporarily unavailable. If the problem continues, please contact your support team.” You verify that the users can sign in to Lync when they connect from the Internet.
You need to ensure that all of the users can sign in to Lync. Which alias (CNAME) record should you create in the internal DNS domain?
To answer, select the appropriate record name and the appropriate record target in the answer area.
Hot Area:
Correct Answer:
Explanation/Reference:
Note:
. The FQDN must be the primary on the cert or be a SAN entry for the cert. Usually, the FQDN would be sip.mydomain.com. Create a SRV record for sip to point to the real FQDN of the host.
. The Lync 2013 Preview client can be set to use manual configuration to check whether the sign in issue is related to DNS resolution issues. If manual configuration works and automatic configuration doesn’t work, it usually indicates a problem with DNS resolution. This usually occurs because the DNS SRV records aren’t present or are inaccessible from the client computer. To set Lync 2013 Preview to use manual configuration, follow these steps:
In the upper-right area of Lync 2013 Preview, click the Gear icon to open the Options page.
In the Lync – Options dialog box, click Personal.
Next to the sign-in address, click Advanced.
Make sure that Manual Configuration is selected and that the configuration values are exactly as follows:
Internal server name or IP address: sipdir.online.lync.com:443
External server name or IP address: sipdir.online.lync.com:443
