Scenario
You want to find out how the Exclaimer Cloud Signature Update Agent connects to the internet to download signatures. You have a restrictive firewall policy and need to whitelist the URLs used by the Agent.
Resolution
The Exclaimer Cloud Signature Update Agent uses the following URLs - please add these to your firewall allow/exceptions list to ensure that the Agent can connect successfully:
| URL | Purpose |
|---|---|
| login.microsoftonline.com | Used to authenticate to Azure. |
| secure.aadcdn.microsoftonline-p.com | Used to authenticate to Azure. |
|
<region code>.outlooksignatures.exclaimer.net (Where <region code> is replaced with the region code for the subscription, see: How to check your region code) |
Used to download signature data. |
| outlookclient.exclaimer.net | Used to determine which data center to connect to. |