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