Re: Cyrus IMAP ; case studies, success stories, ... I need them
Thanks a lot for all your testimonials. I appreciate it a lot, Piet -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Piet RUYSSINCKe-mail: [EMAIL PROTECTED] Unix Systeem Administratie tel: +32 9 264 4733 Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Please avoid sending me Word or PowerPoint attachments See http://www.fsf.org/philosophy/no-word-attachments.html
Re: Cyrus IMAP ; case studies, success stories, ... I need them
Hello, We have been using Cyrus at NCSU for some time now. We've only had a couple of software problems and they've been addressed with bugfixes now. NCSU is a large university in North Carolina, USA. We have four machines we are moving our accounts to that are running Cyrus. They are E-220R servers from Sun running Solaris. They have a SAN with 400 Gb of capacity split to provide 100Gb to each server. We currently have a quota limit for students of 10 Mb and faculty/staff of 20Mb. Additional quota may be leased if someone needs it. We have thousands of accounts per machine. The shared mailbox feature is nice. Our library uses that to help shuttle requests around. One of our departments is evaluating the possibility of using shared mailboxes to help with the amount of email they recieve asking for information about their programs, etc. Basically, Cyrus is a solid performer. I've only one big wish and that is some form of redundancy be built into it. As someone else also mentioned, we use the Steltor/Oracle Product, Corporate Time for calendaring and scheduling. Works for us and even has a nice web client. Frankly, I wish people would not insist on this combination of email and groupware. Email is done best by email software. Groupware should be able to use email API's to get any messaging done that needs to be emailed. We've seen our share of political infighting on campus here with people using Groupwise because they NEED the groupware capability. Anyway, my $0.02. Best of luck in your endeavor to use Cyrus. Regards, Earl Shannon -- Systems Programmer, Computing Services, Information Technology NC State University. http://www.earl.ncsu.edu Piet Ruyssinck wrote: > > Hi all, > > I have set up a test machine with cyrus imapd 2.1.11 and everything > that goes with it. Very nice system, working perfectly, in a test > environment of some 30 people. > > Today, I went to see management, to get money for the production system > hardware (I'm thinking about a full Sun Fire 280R with a full Sun > StorEdge 3310 SCSI Array), > ... only to hear that some other people are working on a solution based on MS > Exchange, because they want the groupware functionality. > > I might be able to convince them to adopt Cyrus imapd, if only I can > assure them that it will peacefully coexist with MS exchange. They can > agree on using Cyrus for e-mail, and Exchange for the groupware stuff. > But, being a full time unix admin, I have no clue about exchange. Is > such a setup possible ? Or does Exchange rely on its own e-mail system ? > > Together with information, I could also use any Cyrus imapd success > stories that I can get. > > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. Maybe we could collect this data in some kind of > registry. > > Looking forward to your replies, > Piet Ruyssinck > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Piet RUYSSINCKe-mail: [EMAIL PROTECTED] > Unix Systeem Administratie tel: +32 9 264 4733 > Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 > Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Please avoid sending me Word or PowerPoint attachments > See http://www.fsf.org/philosophy/no-word-attachments.html
Re: Cyrus IMAP ; case studies, success stories, ... I need them
if you have to compete with MS exchange have you thought about looking at SuSE's Openexchange Server or bynaries InsightConnector. bynaries solution is probable what you'd be looking for, $39.00/license. Piet Ruyssinck wrote: Hi all, I have set up a test machine with cyrus imapd 2.1.11 and everything that goes with it. Very nice system, working perfectly, in a test environment of some 30 people. Today, I went to see management, to get money for the production system hardware (I'm thinking about a full Sun Fire 280R with a full Sun StorEdge 3310 SCSI Array), ... only to hear that some other people are working on a solution based on MS Exchange, because they want the groupware functionality. I might be able to convince them to adopt Cyrus imapd, if only I can assure them that it will peacefully coexist with MS exchange. They can agree on using Cyrus for e-mail, and Exchange for the groupware stuff. But, being a full time unix admin, I have no clue about exchange. Is such a setup possible ? Or does Exchange rely on its own e-mail system ? Together with information, I could also use any Cyrus imapd success stories that I can get. If you're running Cyrus for a reasonably sized company or institution, please let me know, including the hardware you're using, number of (simultaneous) users, level of satisfaction, and other useful information. Maybe we could collect this data in some kind of registry. Looking forward to your replies, Piet Ruyssinck -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Piet RUYSSINCKe-mail: [EMAIL PROTECTED] Unix Systeem Administratie tel: +32 9 264 4733 Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Please avoid sending me Word or PowerPoint attachments See http://www.fsf.org/philosophy/no-word-attachments.html -- Darin Perusich Unix Systems Administrator Cognigen Corp. [EMAIL PROTECTED]
Re: Cyrus IMAP ; case studies, success stories, ... I need them
On Thu, Jan 09, 2003 at 04:37:21PM +0100, Piet Ruyssinck wrote: > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. Maybe we could collect this data in some kind of > registry. My company is running a free email service for a customer of ours. The entire system used to run on one computer hosting about 45k mailboxes, and about 250-300 simultaneous imp users. We never allowed anyone to connect directly to the machine. The machine was a dual PIII-600 dell. The system was split up (due to spam loads) and the mailbox server is on one machine. Something like 55k mailboxes now, 350 simultaneous imp sessions, etc. The new machines are 1Ghz machines. -peace -- Let he who is without clue kiss my ass
Re: Cyrus IMAP ; case studies, success stories, ... I need them
We've been using Cyrus IMAP since 1998 version 1.5.19. We just recently upgraded to 2.1.11 and couldn't be happier. We do have several folks who use Outlook as an IMAP client for email and the Exchange native calendar/groupware features. I'm told integration does suffer slightly in this setup -- institutionally we use Steltor/Oracle CorporateTime for calendaring. We support 3000 users using a cluster of 4 backend machines and 3 front end machines. (frontends are load balanced crudely via Round Robin DNS, the backends are balanced by where we create mailboxes) Concurrent logins hover at 350-450 - we have spiked to 10 logins/second without problems. We adopted the clustering setup for performance and availability reasons and are VERY glad we did it this way. We can increase our capacity without downtime or user notification -- we've done it several times. Our system uses Kerberos as the backend authentication system. We use LDAP to route mail within the cluster -- via sendmail ldap routing. Cyrus is an excellent performer -- but I would encourage you to do some testing before deploying a large installation. Our pre deployment testing (using http://www.etestinglabs.com/benchmarks/svrtools/email/t1intro.asp?visitor=X) helped us tune our IO subsystems for better performance (use Hardware RAID). It also uncovered some additional performance issues: We found: IO IO IO -- Cyrus is all about IO. Pay alot of attention here. At least on PC class gear hardware RAID w/ cache is almost a requirement in any decent size install. We used software raid for 3 years -- 3 painful years. LMTP seems to work best with a limit of 10 processes due to BDB locking on the deliverdb. Our internet based inbound delivery is handled by 4 different machines doing LDAP routing, mimedefang and spamassassin. Our internal inbound SMTP handling is handled by the imap front-ends. We have just started using Sieve but it appears to work great. Our webmail interface (IMP) is on yet another machine. The backend servers Base Box is http://www.supermicro.com/PRODUCT/SUPERServer/SuperServer6021H.htm PIII 1Ghz 1GB RAM Mylex 352 RAID w/ BBM and 32Mb 4 - 37Gb U160 Seagate Drives The front-end machines: (currently run custom proxy code -- switching to CMU murder soon) PIII 1Gz 512Mb RAM Single 18Gb U160 Drive You can read my original (OLD) paper on our cluster at (predates CMU murder I think) http://www.siumed.edu/~pfleming/development/email/ One of these days I'll get the current setup documented. Paul Fleming SIU School of Medicine Springfield IL Piet Ruyssinck wrote: > > Hi all, > > I have set up a test machine with cyrus imapd 2.1.11 and everything > that goes with it. Very nice system, working perfectly, in a test > environment of some 30 people. > > Today, I went to see management, to get money for the production system > hardware (I'm thinking about a full Sun Fire 280R with a full Sun > StorEdge 3310 SCSI Array), > ... only to hear that some other people are working on a solution based on MS > Exchange, because they want the groupware functionality. > > I might be able to convince them to adopt Cyrus imapd, if only I can > assure them that it will peacefully coexist with MS exchange. They can > agree on using Cyrus for e-mail, and Exchange for the groupware stuff. > But, being a full time unix admin, I have no clue about exchange. Is > such a setup possible ? Or does Exchange rely on its own e-mail system ? > > Together with information, I could also use any Cyrus imapd success > stories that I can get. > > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. Maybe we could collect this data in some kind of > registry. > > Looking forward to your replies, > Piet Ruyssinck > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Piet RUYSSINCKe-mail: [EMAIL PROTECTED] > Unix Systeem Administratie tel: +32 9 264 4733 > Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 > Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Please avoid sending me Word or PowerPoint attachments > See http://www.fsf.org/philosophy/no-word-attachments.html
Re: Cyrus IMAP ; case studies, success stories, ... I need them
On Thu, Jan 09, 2003 at 04:37:21PM +0100, Piet Ruyssinck wrote: > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. Maybe we could collect this data in some kind of > registry. We use Cyrus 2.1.x to support 99 users today with capacity to scale to 500 users in the future. Hardware is IBM xSeries x240 with ServeRAID 4H and plenty of RAID5 storage. The OS is Red Hat 7.3 + errata. We don't have a client side policy since our user base is 'Linux smart'. This allows the users to pick clients they feel comfortable with. We recommend Mozilla, Evolution, and fetchmail however. In the Feb 2003 LinuxJournal has a feature story on replacing Exchange. The story is not online as far as I an tell but here are the resources: Exchange Server HOWTO http://www.arrayservices.com/projects/Exchange-HOWTO/ Bynari InsightServer http://www.bynari.net/insightserver.html From what I understand Bynari has a produt that works with Outlook (Express?) to handle the groupware features such as calendars. The mail store is of course Cyrus IMAPd. -- Scott Russell ([EMAIL PROTECTED]) Linux Technology Center, System Admin, RHCE. Dial 877-735-8200 then ask for 919-543-9289 (TTY) msg10286/pgp0.pgp Description: PGP signature
Re: Cyrus IMAP ; case studies, success stories, ... I need them
On Thu, 09 Jan 2003, Piet Ruyssinck wrote: > Together with information, I could also use any Cyrus imapd success > stories that I can get. We are running the City Hall of Campinas/SP/Brazil (middle-sized city, circa 1M people), using a two machine cluster, one with two cpus running postfix-tls 2.0.0.1, and another one with a single PIII-800 cpu, and Cyrus 2.1.11 (Debian). We have about 1000 users right now, and most of them prefer to connect to cyrus using pop3 (!), but the webmail system (Squirrelmail) likes to use imap. Usually we have 2-3 simultaneous imap users (99% of them are squirrelmail sessions), and about 1 pop3 download per second. The system handles about 33k new messages/week. We never had any real problems with the Cyrus setup: not a single one instance of trouble, actually. It is a *heavily* patched Cyrus IMAPd, though (the one in Debian) which is more stable in Linux machines than CMU's upstream version in Linux machines (IMHO, and AFAIK). You will have to test your setup against the outcrook clients your users will be using, and you will need to patch Cyrus 2.1.11 with at least the seen state flush stuff. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh
Re: Cyrus IMAP ; case studies, success stories, ... I need them
Piet, We use a mix of Cyrus and MeetingMaker to appoximate the groupware aspects, and it does work quite wekk...as to making Cyrus and Exchange co-exist...I've only heard of people sticking Unix MTA's in front of Exchange to allow for less of a risk on their internet gateway, however as far as I know the mail still needs to sit on the exchange server. You may be able to get around this by setting up 2 different accounts in Outlook simotaniously but it would be ugly. Introduce them to some of the other options out there, MM isn't bad, nor is it expensive. -David _ David Chait Sys Admin - Facilities Operations 333 Bonair Siding Road #107 Stanford CA, 94305 [EMAIL PROTECTED] - Original Message - From: "Piet Ruyssinck" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Cc: "Piet Ruyssinck" <[EMAIL PROTECTED]> Sent: Thursday, January 09, 2003 7:37 AM Subject: Cyrus IMAP ; case studies, success stories, ... I need them > Hi all, > > I have set up a test machine with cyrus imapd 2.1.11 and everything > that goes with it. Very nice system, working perfectly, in a test > environment of some 30 people. > > Today, I went to see management, to get money for the production system > hardware (I'm thinking about a full Sun Fire 280R with a full Sun > StorEdge 3310 SCSI Array), > ... only to hear that some other people are working on a solution based on MS > Exchange, because they want the groupware functionality. > > I might be able to convince them to adopt Cyrus imapd, if only I can > assure them that it will peacefully coexist with MS exchange. They can > agree on using Cyrus for e-mail, and Exchange for the groupware stuff. > But, being a full time unix admin, I have no clue about exchange. Is > such a setup possible ? Or does Exchange rely on its own e-mail system ? > > Together with information, I could also use any Cyrus imapd success > stories that I can get. > > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. Maybe we could collect this data in some kind of > registry. > > Looking forward to your replies, > Piet Ruyssinck > > > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Piet RUYSSINCKe-mail: [EMAIL PROTECTED] > Unix Systeem Administratie tel: +32 9 264 4733 > Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 > Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie > -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- > Please avoid sending me Word or PowerPoint attachments > See http://www.fsf.org/philosophy/no-word-attachments.html > > >
Re: Cyrus IMAP ; case studies, success stories, ... I need them
Piet Ruyssinck <[EMAIL PROTECTED]> writes: > If you're running Cyrus for a reasonably sized company or institution, > please let me know, including the hardware you're using, number of > (simultaneous) users, level of satisfaction, and other useful > information. We've been using Cyrus 2.1.9 in production for about one or two months now. I am very satisfied with how well it's doing. The hardware we are running on are Compaq boxes (RAID 5, 1GHz, 1GB RAM) and our server running the Cyrus and Exim software is most likely quite bored at the moment with load averages of 0.60, 0.97, 0.55 (it's running Horde and some other stuff too). We have roughly 30 users. I think it's safe to say (watching the logs) that at any time there are at least two users talking with Cyrus. Currently, we have about 1.5GB on the Cyrus partition and accessing our mailboxes is a snappy as ever. I have many thousands of emails in my mailbox and it seems to be as fast as ever to access any of them. And I cannot praise the Sieve implementation enough. I use it for all my mail filtering and have had absolutely no problems with it. You'll want to test your clients before rolling it out. Outlook Express and Outlook versions prior to Office 2002 have been giving me serious headaches with how utterly broken they are. We are moving away from them as fast as we can. Erik.
Cyrus IMAP ; case studies, success stories, ... I need them
Hi all, I have set up a test machine with cyrus imapd 2.1.11 and everything that goes with it. Very nice system, working perfectly, in a test environment of some 30 people. Today, I went to see management, to get money for the production system hardware (I'm thinking about a full Sun Fire 280R with a full Sun StorEdge 3310 SCSI Array), ... only to hear that some other people are working on a solution based on MS Exchange, because they want the groupware functionality. I might be able to convince them to adopt Cyrus imapd, if only I can assure them that it will peacefully coexist with MS exchange. They can agree on using Cyrus for e-mail, and Exchange for the groupware stuff. But, being a full time unix admin, I have no clue about exchange. Is such a setup possible ? Or does Exchange rely on its own e-mail system ? Together with information, I could also use any Cyrus imapd success stories that I can get. If you're running Cyrus for a reasonably sized company or institution, please let me know, including the hardware you're using, number of (simultaneous) users, level of satisfaction, and other useful information. Maybe we could collect this data in some kind of registry. Looking forward to your replies, Piet Ruyssinck -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Piet RUYSSINCKe-mail: [EMAIL PROTECTED] Unix Systeem Administratie tel: +32 9 264 4733 Directie Informatie- en Communicatietechnologie (ICT) fax: +32 9 264 4994 Universiteit Gent (RUG) Krijgslaan 281, gebouw S9 - 9000 Gent, Belgie -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Please avoid sending me Word or PowerPoint attachments See http://www.fsf.org/philosophy/no-word-attachments.html
