Parallel mode - the mail traffic goes via MS365 and from there via seppmail.cloud

Mandatory Services:

  • SC-SERVICE
  • SC-MS365

Optional Services:

  • SC-SIGENC or SC-SIGONLY
  • For SC-SIGENC or SC-SIGONLY: SC-CERT

 

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anchor link Note:

For this connection, the correct mail routing must be activated in ExchangeOnline via a Powershell module.

This module is supplied by SEPPmail at Github. We recommend to follow this Github project for updates.

The documentation can be found in chapter SEPPmail365cloud PowerShell Module.

 

warning

anchor link Warning:

If the recipient domain is rewritten by Exchange Online (for example, if the primary mail domain is changed), decryption by seppmail.cloud is not possible. With the parallel connection to Exchange Online, SEPPmail relies on the transport rules to be able to perform decryption in seppmail.cloud. However, Exchange Online already rewrites the recipient before the SEPPmail transport rules are being evaluated. This means that there is no suitable Private Key for decryption in seppmail.cloud.