Expand Distribution List Test

Using Skype for Business, service users can search the address book for other users in their organization. They can also add email addresses and distribution lists to their Contacts lists. Instant messages can be sent to individual members of a distribution list or the entire distribution list. Distribution lists can be expanded to see the individual members if there are 100 or fewer individual members (regardless of the members’ presence or sign-in status). This test monitors the Distribution list and reports the time taken to process the requests, the number of requests that passed user input validation and the rate at which the AD requests time out. This way, administrators may oversee the effectiveness of the distribution list and if there are too many timed out requests, they can easily figure out the problematic list and rectify the same before users start complaining.

Target of the test : A Microsoft Skype for Business server

Agent deploying the test : An internal/remote agent

Outputs of the test : One set of results for the target Microsoft Skype for Business server that is to be monitored.

Configurable parameters for the test
Parameters Description

Test Period

How often should the test be executed.


The host for which the test is to be configured.


The port at which the specified host listens. The default port is 5060.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Request processing time

Indicates the average time taken to process a request successfully.


A high value for this measure may indicate performance issues with the Active Directory servers such as CPU overload.

Rate of SOAP exceptions

Indicates the rate at which SOAP exceptions occurred.



User input validated requests

Indicates the number of requests that passed user input validation.



Timed out AD requests rate

Indicates the rate at which Active Directory requests timed out.