Changes in 4.4.7:
* rfc2ftn: new options RegisteredHostsOnly (not yet implemented!),
kinda reverse function to -i --ignore-hosts, and
RegisteredAliasesOnly, allowing only mail to recipient addresses
registered via the ALIASES file, both alias@host.do.main and
User_Name@host.do.main; bounced mails (host, user) are now logged,
logging of messages now more sendmail-like.
The RegisteredAliasesOnly option is quite useful for bouncing spam
to non-existing addresses right at the gateway (used that way at
Fido.DE).