Outbound email may fail to be processed by Encryption Management Server under the following conditions:
If the Active Directory Display Name changes, this warning will appear in the administration console under Reporting / Logs / Groups log where First Last is the user name:
encountered error while regrouping consumer "First Last" (29daa18b-b0b0-4e79-a987-2499d88fcfb6): cannot delete derived object while source object is present
If the user sends an outbound email through Encryption Management Server, the email fails to be sent and the following error appears in the administration console under Reporting / Logs / Mail log:
error handling SMTP DATA event: cannot delete derived object while source object is present
Symantec Encryption Management Server 10.5 MP3.
This issue was first resolved in release 10.5 MP3 HF1 so please upgrade.
If you cannot upgrade, to work around this issue, from the administration console: