SAP Knowledge Base Article - Public

2784061 - Connection from C4C to MS Exchange WAP Server failed using server-side groupware integration


Customer cannot establish connection from their C4C Tenant (using server-side groupware integration) to MS Exchange WAP Server. One or both of the following Errors appear:

  • "Users' Exchange Impersonated Access failed because the impersonating account could not access the user's accounts."
  • "ISA-097: Incomplete Exchange Impersonation Configuration: Unsupported User Impersonation Type."


SAP Cloud for Customer

Reproducing the Issue

  1. Logon to the C4C tenant with Support or Key user credentials.
  2. Launch the HTML5 UI.
  3. Open Administrator > Groupware Settings > Organisations.
  4. Choose company profile > Email Configuration.
  5. Change the Mailbox Access Type to "Microsoft Exchange Impersonation".
  6. Fill in the needed information: Account Logon (as defined by customer), Password (as defined by customer) and Exchange Webservice URL (as defined by customer).
  7. Click "Check Users' Exchange Impersonated Access".


The MS Exchange Server of the customer is restricted to a certain IP range.


The customer needs to add all the IP's listed for the respective DNS where their tenant is located on.

C4C Azure Static IP's Productive landscape:

Location SU Resource IP Website (public DNS)
WDC wdcprod01 web
WDC wdcprod01 worker
WDC wdctest01 web
WDC wdctest01 worker
FRA fraprod01 web
FRA fraprod01 worker
FRA fratest01 web
FRA fratest01 worker
PER perprod01 web
PER perprod01 worker
PER pertest01 web
PER pertest01 worker



groupware, server-side, e-mail integration, azure, ip range, exchange server, wap server, static ip's , KBA , LOD-CRM-GW-SCC , Invisible CRM - Smart Cloud Connect Solution , Problem


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