|Situation||You want to use remote journaling for Office 365 with Proofpoint Essentials Legacy Archiving.|
Proofpoint Essentials Legacy Archiving does not currently support remote journaling for Office 365. Only standard (local) journaling is supported. If journaling support for Office 365 is required, the new Archiving interface must be used. This can be enabled under the Company Settings > Features menu by enabling the option for Enable Email Archive.
Proofpoint Essentials Archiving does support Office 365 through SMTP (Simple Mail Transfer Protocol). This connection method allows customers to remote journal their email to a unique SMTP address supplied by Proofpoint Essentials. This is the preferred method for connection. Support is available for both Local Exchange and Office 365.
Click here for steps on how to set up Office 365 Remote Journaling with Proofpoint Essentials Archiving.