Mail System Redesign

[Martin.Hepworth]

Jay

For backend email have a look at how the boys at Cambridge UK have done
there's. Its called hermes (based around exim of course) and the main
person behind it Tony Finch. Google will help to show archicture etc
etc....

--
Martin Hepworth
Snr Systems Administrator
Solid State Logic
Tel: +44 (0)1865 842300

> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info [mailto:mailscanner-
> bounces at lists.mailscanner.info] On Behalf Of Jay Chandler
> Sent: 12 July 2007 04:15
> To: MailScanner discussion
> Subject: Mail System Redesign
>
> Howdy.
>
> I'm at a bit of a crossroads at this point in time-- I've crossposted
> this message to a few places where those far more knowledgeable than I
> are wont to hide.
>
> I've been tasked with rearchitecting the mailsystem for our
university.
> I did this once before; probably 9 months ago, since what passed
before
> was truly no longer working.
>
> What we have right now is FreeBSD MX boxes running Postfix for an MTA
> that are screening email for RFC compliance, and against several
DNSBLs
> (as well as "does this user exist in our LDAP directory?") -- anything
> that fails is rejected, anything that passes continues on.  After
that,
> we're running MailScanner on the messages, and tagging according to
> SpamAssassin (configured with sitewide rules because that's how
> MailScanner does things).  From there, we deliver to the user's mbox
> (mounted over NFS, but I've managed to work out the locking issues).
> Dovecot serves the mbox to our Squirrelmail server, as well as to POP
or
> IMAP users directly at their client of choice.
>
> I have a few problems with this setup.  The first is user
> dissatisfaction.  They want the ability to white and black list
> individual senders (and possibly domains), preferably as close to the
> beginning of the process as possible.  Obviously I don't want one
user's
> whitelisting of spammers.com to affect anyone but that particular
user.
> As of now we have no individual white or black listing.
>
> The second is management-- I'm looking to convert to MailDir (to
> obliterate the last vestiges of the locking issues) and institute
quotas.
>
> The third is upper management suggesting that we might look to move to
> an Exchange server for handling user accounts at some point in the
> future, and as much of the white and blacklisting functionality should
> continue to exist if users edit their .forward files to show a
> completely different system (such as Exchange.  Ugh).
>
> Does anyone have any wisdom on this situation that they'd care to
express?
>
> --
> Jay Chandler / KB1JWQ
> Network Administrator / Systems Exorcist
> Chapman University, Orange CA
>
> --
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> mailscanner at lists.mailscanner.info
> http://lists.mailscanner.info/mailman/listinfo/mailscanner
>
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>
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(Company No:5362730)
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