Well, I got my OpenBSD server working behind an OpenBSD PF firewall.
On the server, I'm running fetchmail to get my email, qmail to deliver
it, and courier-imapd-ssl to view it remotely with my laptop. Also, my
server home directory is mounted on my Mac Mini workstation via NFS.

All is good, just would like some guidance on the following:

1. Since I have to mount the home directory with the -P2 option, it is
impossible to get OS X to automatically mount the home directory. I
have to login to the Mac Mini as root, mount it, and then I'm good to
go. How can I get these two to play nice?

2. My home directory is mounted global read/write behind the firewall.
This is not good practice, I know. How do I mount it such that it
will be read/writable via the Mac, but not to the rest of the world?
I'm thinking of permissions, exports, etc.

3. I cannot get Squirrelmail to work for love or money. The message I
keep getting is "connection dropped by IMAP server." Under Linux, it
worked beautifully, first try. What could be the cause?

4. Apache doesn't recognize "index.php" for some reason. If I type
the URL http://foo.bar.com/webmail/index.php, then Apache loads it, but
if I just type http://foo.bar.com/webmail/, Apache shows (!) a listing
of the Webmail directory. This is a major security hole, I know. How
can I patch it?

5. I want to block the script kiddie dictionary attacks at my SSH at
the firewall. I know there are scripts that track the number of login
attempts from a certain IP, but I would need to get this information
from my server to my firewall so it can be blocked. Alternatively, I
could also run PF on the server and do it that way, but I'd rather do
it at the firewall. Any ideas?

Any help would be appreciated.