Addrtypescan, addrtypescanbccdefault, noaddrtypescan channel options

Address type flags
(New in 7.0.5.) If the   channel option is set, then RCPT TO addresses (that is, envelope recipients) are compared with header recipient fields (To:, Cc:, Bcc:, Resent-To:, Resent-Cc:, and Resent-Bcc:). When a match is found, that fact is recorded in the delivery flags associated with that envelope recipient. Those flags are then used when generating the report part of Microsoft® Exchange 2007  envelope journaling  archive messages, distinguishing between various types of envelope recipient addresses.

operates in the same way as,        except that when no matches are found for a given address, that       address is assumed to be a blind carbon (Bcc:) recipient. This option      should only be used when it is certain the messages have come       directly from a client that implements Bcc: by simply omitting       the blind carbon recipient from the header and which doesn&#x27;t support       any form of local mailing lists. Use in any other context is guaranteed       to result in incorrect types being attached!

is the default.

Also note that since the MTA&#x27;s delivery flags       are used to store this informtion, the MTA&#x27;s delivery flag transfer       facilities may be used to transport this information between MTAs; see the   channel option.

See also:
 * deliveryflags Option
 * Alias file named parameters
 * ldap_check_header MTA Option
 * alias_header_check Option
 * Format of captured message copies
 * journal_format MTA Option
 * Addresses channel options
 * Headers channel options
 * Sieve filters and delivery flags channel options
 * Channel options