cyrus imap corporate references

[Chetan Dutta]

hi!

let me answer all your queries one by one.

>1. What kind of database are the username/passwords stored in?
>Is it LDAP, sasldb or mySQL. I've only experiences from mySQL myself...

Its OpenLDAP, just remember to change the indexes for better performance.

>2. What kind og cluster software do you use?
>Is it HartBeat, LifeKeeper??

I'm using RedHat's Cluster Suit, i've configured it to provide redundency,
just in  case one system goes down the other comes up automatically. Just
check RH's site for more information on Cluster Suit.

>3. Do you use shared mailstore on a SAN box? And if so - what kind of
>failover solution do you have in case of unreadable mailstore-filesystem?
All the mails are stored on SAN( I'm using hub instead of switch, it saves
cost), The shared storage can be accessed by one system at a time only. The
moment one goes down, the partition(on SAN) with mail stores is mounted
automatically on the other system and cyrus-imapd is started. In a way, the
service with everything including IP is migrated to other stand by system.
I've not tried it on GFS or any other cluster file system, but i'll try it
soon. GFS can, i believe, provide load sharing.
what is your requirement? also you can consider Cyrus Murder.

I wonder what is the experience of others on the list?


regards
chetan dutta

Sr. Engineer
TATA Infotech Ltd.



-----Original Message-----
From: Tom Bryntesen [mailto:tom at bryntez.com]
Sent: Sunday, November 07, 2004 2:29 AM
To: Chetan Dutta
Subject: Re: cyrus imap corporate references


Hi there Chetan ... many thanx for your reply.

I've some questions for you - if you bare with me....

1. What kind of database are the username/passwords stored in?
Is it LDAP, sasldb or mySQL. I've only experiences from mySQL myself...

2. What kind og cluster software do you use?
Is it HartBeat, LifeKeeper??

3. Do you use shared mailstore on a SAN box? And if so - what kind of
failover solution do you have in case of unreadable mailstore-filesystem?

I hope you can enlighten me a little bit on these issues, if you have
time to spare...

Take care :-)
Regards

Tom Bryntesen


Chetan Dutta wrote:

>hi!
>
>i've just finished the design of a HA e-mail solution for one of our
>lient( sorry! i can't name them), the end users would be around 60,000,
>distributed geographically in a wide area. I'm using RHEL 3.0 with cluster
>suit. we have around 6 clusters, each will host many domains + some other
>applications  and serve around 10000 users.
>I've found cyrus realy good, its easy to configure and manage, u can also
>use jabber to provide chat services with the same username/ password pair,
>it works great!
>Thanks to all contributors who made Cyrus work.
>
>
>chetan dutta
>
>
>
>-----Original Message-----
>From: owner-info-cyrus at lists.andrew.cmu.edu
>[mailto:owner-info-cyrus at lists.andrew.cmu.edu]On Behalf Of Tom Bryntesen
>Sent: Thursday, November 04, 2004 3:19 AM
>To: Cyrus Info list
>Subject: cyrus imap corporate references
>
>
>Hi list
>
>I've been investigating "high availability" e-mail solution for one of our
>customers. The only thing I lack in my report is some references to
>other companies out there running cyrus. I've tried to google for
>results, but I've not been able to find companies I can compare with.
>
>The competition: MS Exchange.
>Scenario: approx. 10.000 pop3/imap users (corporate environment)
>concurrent connections: max 200?
>
>Any website-link to companies running cyrus in this scenario are
>much appreciated.
>
>Regards
>Tom Bryntesen
>
>
>
>

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