Re: OpenLDAP and BIG mail environments

[Quanah Gibson-Mount <quanah@stanford.edu>]

--On Wednesday, February 11, 2004 2:00 PM -0800 James Courtney 
<Jcourtney@inphonic.com> wrote:

> Background:
> We're currently supporting 20,000 users on a Mirapoint mail system backed
> by a server running OpenLDAP 2.1.25 with DB 4.2.52 behind.  Things are
> currently running quite well but we're rearchitecting our system and
> we're told that we may be brining in 20,000+ users a month on a feature
> limited version of our product which only supports mail (voice mail to be
> specific).  Our product stores messages (voice mail, email, fax) in our
> email server which we're building anew ourselves using the above
> mentioned components.  Clearly the mail server and LDAP in that case will
> get a good workout...

Hi Jamey,

We have approximately 50k accounts that get mail delivered to on a daily 
basis.  We use openldap as our backend for maildrop lookups.  There are 3 
OpenLDAP servers dedicated to this purpose.  We are using sendmail right 
now instead of postfix (but are in the process of upgrading).  Our servers 
have been able to handle the daily load without problem.  I will also note 
that about 50% of our email is spam, so that is on top of the 50k actual 
accounts that exist.  We get over 1 million queries a day per server (so 
over 3 million queries a day) last I checked.  The OpenLDAP servers handle 
this without complaint.

--Quanah

--
Quanah Gibson-Mount
Principal Software Developer
ITSS/TSS/Computing Systems
ITSS/TSS/Infrastructure Operations
Stanford University
GnuPG Public Key: http://www.stanford.edu/~quanah/pgp.html