Symantec Encryption Management Server (SEMS) Web E-mail Protection (WEP) remote users are receiving the account expiration e-mails that have an internal, non-resolvable, reply URL.
The account expiration e-mails are being sent to the remote users from the internal SEMS server.
That e-mail includes the internal, private, non-resolvable, URL of the internal SEMS server.
The internal SEMS server has the private URL configured in the Services > Web Email Protection > Interface > Public URL field.
Modify the Services > Web Email Protection > Interface > Public URL field to include the correct, publicly resolvable, URL