Over time some trusted Certificate Authority (CA) certificates will expire and will no longer be trusted by the Symantec Messaging Gateway (SMG). While there is no harm in leaving the expired certificates in the trusted CA certificate bundle some administrators may want to remove the expired certificates from the SMG control center.
To remove expired CA certificates:
The expired certificates will not be restored, effectively removing them from the CA certificate list. The following message is displayed in the Control Center after a successful import:
"CA Certificates restored successfully. Note that expired certificates are not imported."