Usercertfilter Option

The  SMIME option specifies the URL filter string used to search for certificates by attributes of directory objects. It is used in conjunction with the   option. It is required when S/MIME features are enabled. Use any combination of these three email address attributes (but at least one). Example: (&#x7c;(mail=%e)(mailAlternateAddress=%e)(mailEquivalentAddress=%e))

See also:
 * certurl Option
 * SMIME options