gentoo-overlay/mail-filter/spf-engine/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="person">
    <email>mjo@gentoo.org</email>
  </maintainer>
  <upstream>
    <remote-id type="launchpad">spf-engine</remote-id>
    <remote-id type="pypi">spf-engine</remote-id>
  </upstream>
</pkgmetadata>