Here are the data structures with brief descriptions:

Cauthcmd
Ccstring	Record of a constant string
Cdaneinfo	Contents of one DNS DANE record
Cdns_wc	List entry of a wildcard nameserver for a top level domain
Cips	List of IP addresses for a given host
Crecip	List of recipients given for this transaction
Csmtpcomm
Cstring	Record of a string
Cuserconf
Cxmitstat