Postfix/chroot

Notes

• https://www.oreilly.com/library/view/postfix-the-definitive/0596002122/ch04s08.html chroot (from Postfix: The Definitive Guide by Kyle D. Dent)]

It looks like Webmin sets up postfix with chroot, which is okay up to the point where you try to configure DMARC. There may be a way to get that working with chroot as well, but the problem we ran into was that chrooted postfix could not access the pipe to the DMARC process because it is outside the queue folder.