3004311 - 'InvalidLicenseException' issue in SAP CPI

You are using the 'Mail Adapter' in an integration between the SAP Cloud Integration and an e-mail server. The messages in this scenario are failing with the error below:

Error Details

com.sun.mail.smtp.SMTPSendFailedException: 554 5.2.0

STOREDRV.Submission.Exception: InvalidLicenseException; Failed to process message due to a permanent exception with message Mailbox 'XXXXXXXXXX' doesn't have a valid license. InvalidLicenseException: Mailbox 'XXXXXXXXXXX' doesn't have a valid license.

[Hostname=XXXXXXXXXXXX]

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental. If personal information from internal test system is used.

• SAP Cloud Platform Integration for process services 3.0 
• SAP Cloud Platform Integration for process services 4.0 

SAP HANA Cloud Integration, SAP HCI, SAP CPI, SCPI, tenant, IFlow, Integration Flow, deployment, HCI tooling, Mail, Adapter, License, Invalid, Key, Gmail, Outlook, Provider, Mailbox, 554 Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental. If personal information from internal test system is used. , KBA , LOD-HCI-PI-RT , Integration Runtime , Problem