> I need my mail spool files to have 660 permissions, but whenever
> procmail delievers mail, it resets them to 600. How can I tell
> procmail to *not* do this? Is there some flag I can set on the
> file(s) that make it so that procmail cannot change the perms?
In /etc/procmailrc you can specify the UMASK procmail should use.
On my system, the basic permissions of the mail spool files are
controlled by the MTA, however. In my case Exim. Could be sendmail
or whatever for you. For Exim, the place to manipulate is evident.
For sendmail, well, I wouldn't know.