A long time ago, in a galaxy far, far way, someone said...
> Hello,
>
> Today, I installed Debian Woody with Exim on a Xeon 700 mhz IBM
> Netfinity x250.
Cool :)
> This is going to be a Courier Imap Server for about 2500 users.
Ok
> If nobody screams at me from this list, I will begin building it this
> weekend.
Take it slow: some of the things you want to do can be daunting unless
you've dealt with them before.
> Requirements:
>
> I need to have a directory for email lookups.
One word: LDAP. Almost everything speaks it. It's rare to find something
that doesn't.
> Our orginization is about 40% Mac and 60% windows clients.
>
> We are planning on using Eudora on the client side.
>
> Does Courier have its own native directory lookup service that will work
> with both macs and windows clients running Endora?
Courier doesn't have a directory service of it's own, but it can use LDAP
for directory lookups. All you need is either OpenLDAP or iPlanet
Directory Server - recent versions of the latter require Solaris/SPARC,
AIX/PPC, HP-UX/PA-RISC, WinNT/2k/Intel, or Tru64/Alpha, however. If this
mail system gets big enough (ie 6000+ users) it might be prudent to
consider iPlanet DS on one of the systems I mentioned.
Eudora 5 on Windows understands LDAP just fine. I don't have a Mac around
to test Eudora on that.
> I would like to keep things as simple as possible in this early stage.
>
> The second priority is to get webmail working.
> Would IMP work with 2500 users or is there a better alternative?
>
> (Unless warned otherwise, both IMP and Courier will be on the same
> server to keep things simple.
It might, eventually, be a good idea to have IMP & Courier on different
systems. You'll have to see how well this server handles the load. A
second CPU will definitely help; I don't know if that's an option for you.
> Eventually, I will have to get Ldap working with Kerberos, and with
> Courier Imap for centralized logins.
Is Kerberos strictly required by TPTB? If you don't need the mail system
itself to speak Kerberos LDAP is all you need; Exim and Courier IMAP can
talk to LDAP directly and get all the information they need out of it.
> Am I going in the right direction with Courier Imap or would Cyrus work
> better for this ?
I would start with Courier IMAP. It's better documented :)
PS: "TPTB" = "the powers that be" aka your boss and his boss, or even
higher up the ladder
--
Phil
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