Zimbra

i2ambler · #1 (**permalink**) 05-28-2010, 11:34 AM

Im just curious how many mailboxes everyone hosts, and what your server setup is for that quantity of users are? Do your users use the web console or pop/imap?

Just want some real world info! thanks

dalmate · #2 (**permalink**) 05-28-2010, 09:46 PM

My server:
4 CPUs Dual core 1.8GHz
4 GB Ram
440 GB HDD Raid
Now, we can serve for 450 users who always online
They use IMAP, POP3 and SMTP
rarely they use webclient to access the server
We use zimbra FOSS version 6.0.1 in ubuntu server 8.04.4 LTS

i2ambler · #3 (**permalink**) 06-01-2010, 07:53 AM

Quote:

Originally Posted by dalmate

My server:
4 CPUs Dual core 1.8GHz
4 GB Ram
440 GB HDD Raid
Now, we can serve for 450 users who always online
They use IMAP, POP3 and SMTP
rarely they use webclient to access the server
We use zimbra FOSS version 6.0.1 in ubuntu server 8.04.4 LTS

How is your performance?

I am beginning a migration of 4000 users to zimbra from using sendmail's non-opensource pop/imap to a completely virtual environment. I am planning on using two zimbra mailbox servers, but have begun to think that maybe 3 would be best, with two Ldap servers and an archive server.

dalmate · #4 (**permalink**) 06-02-2010, 01:16 AM

My server is running well.
Maybe, we'll add new mailbox server. Because our users are still growing.
Your multiserver model depends your using mailserver:
-maybe you need more mailbox servers if you use a lot of IMAPs
-or more MTA if you use a lot of SMTPs
In my server, we authenticate with AD.

fcash · #5 (**permalink**) 06-02-2010, 03:22 PM

2100 webmail users, 50 Blackberry users syncing, a whole bunch of ActiveSync users syncing, a handful of Outlook Connector users.

Zimbra 5.0.13 running on 64-bit Ubuntu 8.04 LTS running in a Linux-KVM VM (using paravirt drivers for network/storage).

VM has 2 virtual CPUs, 8 GB of RAM, 500 GB of virtual disk, 1 virtual NIC.

VM host server has:

Tyan h2000M (S3992-E) motherboard
2x AMD Opteron 2220 CPUs @ 2.8 GHz (dual-core)
16 GB of ECC DDR2-SDRAM
12x 400 GB SATA harddrives in a single RAID6 array
3Ware 9650SE RAID controller
Intel 4-port gigabit NIC, bonded together, acting as a bridge for all VMs
running 64-bit Debian 5.0 and KVM-72 (ancient version)

(Yes, we know the VM setup is not optimal, nor is the storage setup optimal; this is a temp server until we finish building our multi-site SAN and VM infrastructure.)

No issues with performance. AV/AS is disabled, as we have a filtering gateway in front of Zimbra. The only time we have any slowdowns are when we migrate accounts from our old webmail server using IMAP/imapsync (and those are now complete).

VM Host is running 8 other VMs, including 2 Windows XP VMs and a Windows Server 2003 VM.

We've even started the process of migrating everything out of our IBM Websphere portal into Zimlets and Briefcases.

Why is everyone running multiple servers for so few users? Just add RAM (4 GB is way too low), and you can handle a lot more users simultaneously.

i2ambler · #6 (**permalink**) 06-02-2010, 05:15 PM

Well, the only directory we use is LDAP for everything. Currently we run on an implementation of SMD, but plan on migrating auth over to zimbra's ldap because of its more modern use of ppolicy - hence the 2 extra servers for ldap. Our LDAP gets hammered from all sides. We are going to be archiving EVERYTHING for 10 years. Hence the archive server as a separate entity. Zimbra specifically recommended two mailstores, so we figured why not? The OS is free.

As I currently have it set up in the test/lab environment using zimbra 6.0.6 ,2 mailstores with one acting as a proxy for all pop/imap, 2 ldap servers just because - with one acting as an MTA temporarily, and an archive server. We will be doing mail routing almost exclusively through sendmail appliances because of dynamic distro lists, voltage, and extensive policy managemnt. 2 sendmail hardware appliances, and 3 MPVs as well as all zimbra systems running in vsphere 4 with drs/ha on an IBM bladecenter. Each blade has 48 gigs of ram, so in production the mailstores will probably get 8 each.