Wietse Venema wrote > If root can do "cat /etc/postfix/mysql/virtual-mailbox-maps.cf" > but the Postfix virtual delivery agent running as root can open > the file, then you have something that interferes with file system > access, like Selinux, Apparmor, Systrace, and so on. Configuring > such systems is outside the scope of Postfix. > > Wietse > Thanks Wietse. It's a pretty slim install (actually inside a Xen VM) and running at init level 3 - it's primary function is as an email server (hence the mailboxes on an NFS share). I'll check the filesystem and process persmissions and see if I can track it down. Definitely no AppArmor/SE Linux involved. Will let you know if I solve it. Thanks again!
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