When attempting to install a license in Symantec Mail Security for Microsoft Exchange (SMSMSE) 7.9.0 or older using an active and valid license, Brightmail Antispam registration fails. When attempting to register and activate antispam manually, you get the following error:
Connection error 60: SSL certificate problem: unable to get local issuer certificate
The certificates used by Brightmail to register licenses with the BLOC (back end) servers expired on May 31st 2020. 7.9.0 and earlier are affected.
You should upgrade your SMSMSE environment to version 7.9.1 MP1 which has the necessary up-to-date certificates for registration to complete successfully.
If upgrading is currently not possible, you can perform the following workaround.