1. The following examples block access to the S/MIME features for one Communications Express Mail user:
mailAllowedServiceAccess: -smime:*$+imap,pop,http,smtp:*
or
mailAllowedServiceAccess: +imap,pop,http,smtp:*
2. The following examples block access to the S/MIME features for all Communications Express Mail users in a domain:
mailDomainAllowedServiceAccess: -smime:*$+imap:*$+pop:*$+smtp:*$+http:*
or
mailDomainAllowedServiceAccess: +imap:*$+pop:*$+smtp:*$+http:*
See 23.7.2 Filter Syntax for more information.