1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
4 <herd>maintainer-wanted</herd>
6 <email>gentoo@bitcetera.com</email>
7 <name>Sven Schwyn</name>
9 <longdescription lang="en">
10 Postwhite is a policy server for Postfix MTA which filters incoming emails
11 based on per recipient whitelists managed by an email frontend.
13 Incoming emails are denied unless the sender address or sender domain is
14 present on the recipient's whitelist. This concept is neither new nor fancy
15 in itself, but the way Postwhite lets you manage your whitelist sure is.
17 Here is a real life example:
19 Arthur's main email address arthur@dent.tld is great for everyday
20 use, but he doesn't want to pollute it by using it for mailing lists,
21 websites, online shopping and such. Postwhite to the rescue! Arthur creates
22 a virtual email address hitchhike@dent.tld which is delivered to
23 the same mailbox. He adds this address to recipients.yml and then
26 Initially, all incoming emails will be denied, so when Arthur decides to
27 join the Betelgeuse mailing list, his whitelist has to learn about this.
28 Arthur sends an empty email to hitchhike+learn@dent.tld which
29 puts Postwhite into learning mode for a limited period of time. In learning
30 mode, Postwhite allows and delivers any incoming mails, yet it
31 delivers a followup notification message along with it. When the first
32 email from the Betelgeuse mailing list comes in, Arthur simply replies to
33 the corresponding notification message thus adding Betelgeuse to the