| Event Id | 2021 |
| Source | MAPS |
| Description | Server Name (SMTPServer) parameter not defined in the Site Configuration service parameters for the Mail service. |
| Event Information | According to Microsoft : Resolution: The mail SCO attempted to delete a Member mailbox, but the site configuration SMTPServer attribute could not be retrieved. Ensure that the Membership Directory service is running properly, and that the site is configured correctly with the SMTPServer attribute. |
| Reference Links | Event ID 2021 of Source MAPS |
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