have callout sender verification applied.
* **grey_users**: a simple list of local parts that should have
greylisting applied.
+* **localonly**: a simple list of local parts that should only accept mail
+ from debian.org hosts.
* **neversenders**: a simple list of local parts (of the virtual domain) that
should never appear as senders of mails.
* **whitelist**: a colon separated list starting with "localpart:" of hosts
owner: bogusmx.rfc-ignorant.org/$sender_address_domain : nomail.rhsbl.sorbs.net/$sender_address_domain
You can find examples of the last two files on any debian.org system
-in /var/lib/misc/*hostname* as mail-rbl and mail-rhsbl.
+in /var/lib/misc/thishost as mail-rbl and mail-rhsbl.