[OpenAFS] Mail delivery (With maildir) to openafs spool

[Noel Burton-Krahn]

Hi Hamish,

Yes, this thread went by a few days ago.  We at bkbox.com use qmail,
procmail, SpamAssassin, Courier IMAP, and SqWebMail on OpenAFS and I'm very
happy with it.

Here are some issues I remember from the discussion:

1. The Maildir delivery process uses link() to move a delivered message from
Maildir/tmp to Maildir/new.  AFS doesn't do link().  You have to patch
postfix or qmail to do rename() instead.  Some people think rename() might
not be as robust as link(), but I haven't seen any technical proofs one way
or the other. I personally use a patched qmail with rename() and it works
fine for me.

2.  You have to make sure your mail delivery agent (postfix) gets the right
permissions to deliver into Maildirs. I make a maild principal and give all
Maildirs an acl like "maild lid".  That lets qmail deliver and delete
messages, but not read them.

3. Getting Courier IMAP and SqWebMail to acquire AFS tokens when a user
login in was tricky, but it works.

Hope that helps,

--Noel



----- Original Message -----
From: "Hamish Marson" <hamish@travellingkiwi.com>
To: <jon+openafs@silicide.dk>
Cc: <openafs-info@openafs.org>
Sent: Wednesday, July 23, 2003 7:20 AM
Subject: Re: [OpenAFS] Mail delivery (With maildir) to openafs spool


> jon+openafs@silicide.dk wrote:
>
> >On Wed, Jul 23, 2003 at 11:06:40AM +0100, Hamish Marson wrote:
> >
> >
> >>Hi all.
> >>
> >>I've asked this question on the postfix mailing list (And been knocked
> >>back a bit :), but thought I'd ask here anyway, since things appear to
> >>be inconclusive so far...
> >>
> >>Is anyone curently using AFS volumes as the mail spool for delivering
> >>email using postfix or does anyone know any reason why it would be a bad
> >>idea to doit? I've searched the web a fair bit & the closest I've come
> >>to an answer is Richard Campbells book saying some people are doing it,
> >>but no details.
> >>
> >>
> >
> >We just dicussed it last week? Did you check the archives?
> >
> >
> >
>
> Yes... I even searched with google... Do you remember the subject? And
> I'll try searching again...
>
> One response I got from a postfix person was
>
> >You can pay for people or you can pay for equipment.
> >
> >Regardless, AFS is the solution to a different problem.
> >
> >With AFS you can't use maildir, because hard links work
> >only within a directory.
> >
> >With AFS you can't use mailbox, because the file system
> >copies files back and forth.
> >
> >In both cases, AFS breaks the safety guarantees of fsync.
> >
> >Who says it is safe to expose AFS to the raw internet?
> >
> >
> >
>
>
> TIA
>
> Hamish.
>
> --
>
> I don't suffer from Insanity... | Linux User #16396
> I enjoy every minute of it... |
> |
> http://www.travellingkiwi.com/ |
>
>
>
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