Из основных изменений:
* headers are 8 bit "transparent".
* the milter API has been extended; some of these new features are:
o New callback xxfi_negotiate() to determine the available protocol actions and features of the MTA at runtime and also to specify which of these a milter wants to use.
o New callback xxfi_data() for the DATA command.
o New callback xxfi_unknown() for unknown SMTP commands.
o New return code SMFIS_SKIP can be used in the xxfi_body() callback to skip over further body chunks and directly advance to the xxfi_eom() callback.
o A milter can be informed about rejected recipients too.
o A milter can now specify itself the list of macros it wants to receive from the MTA.
>>> Подробности
