CodeTwo Signatures Web Add-in for Outlook endpoints
This article lists all endpoint addresses used by the CodeTwo Signatures Web Add-in for Outlook (the modern Web Add-in). If your organization uses an endpoint security mechanism (endpoint filtering) that blocks or allows specific endpoints (URLs, IP addresses, port numbers, etc.), be sure to allow traffic on the specified addresses. Otherwise, the add-in will not work.
General add-in endpoint address
The following endpoint address is used by CodeTwo Signatures Web Add-in for Outlook irrespective of the Azure region in which the add-in resides. You need to whitelist this address in your system's firewall, or any endpoint security tool used in your organization.
Add-in endpoint addresses for specific regions
The add-in also uses all of the following endpoint addresses. You don’t need to whitelist all of them, but only the one(s) used for the Azure region you selected when registering your Microsoft 365 tenant in CodeTwo Admin Panel.
Germany West Central
North Central US
North Europe (you need to whitelist both addresses shown below)
Azure region information in CodeTwo Email Signatures 365
To check the region of the CodeTwo service responsible for adding email signatures in your organization and storing your tenant's settings, sign in to CodeTwo Admin Panel and click the Service status page. The region information is visible in the Service status section, as shown in Fig. 1. Note that if you have added more than one tenant to CodeTwo Admin Panel, the section will list Azure region information for all your tenants.