Negative worker count?!?
Hello, We've recently started to see this show up in our imapd.log file: Jan 31 17:24:03 uni24map master[3673]: lmtp has -2 workers?!? Jan 31 17:24:03 uni24map master[3673]: lmtp has -1 workers?!? Does anyone know why the master would think the lmtp count has gone negative? The imap server gets very slow to respond to connections when this happens, which is what gets it noticed. Looking around and this is what we find. For the curious, here's uname -a: Linux uni24map.unity.ncsu.edu 2.4.21-15.0.4.ELsmp #1 SMP Sat Jul 31 01:25:25 EDT 2004 i686 i686 i386 GNU/Linux Right now we would entertain wild speculation regarding the cause. We have 12 machines and this is only the second one to display this behavior. They are all as much the same both in hardware and software as we can make them. Regards, Earl Shannon -- NCSU ITD Unix Systems Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: Negative worker count?!?
Hello, Oops. That would be nice to know too wouldn't it. Cyrus IMAP4 v2.2.12 Built from source. Regards, Earl Shannon Henrique de Moraes Holschuh wrote: On Thu, 01 Feb 2007, Earl Shannon wrote: Jan 31 17:24:03 uni24map master[3673]: lmtp has -2 workers?!? Jan 31 17:24:03 uni24map master[3673]: lmtp has -1 workers?!? Which Cyrus version, and if using a prepackaged one, exactly which one? Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: cyrus force pop3 clients to leave messages on server
Hello, We worked with this problem for a bit ourselves. We had a rather unique situation however. We had to allow an IMAP client (read this as a person, not MUA) to make a POP connection at login. This was for historical reasons. ( Got a new message count. And yes, we knew it was inaccurate for an IMAP user. ) Our cyrus servers were only for IMAP otherwise. Our POP service was provided to our POP users by a different mechanism. However, in order to prevent a POP MUA from connecting and then deleting all email from the server, either by deletion or copying to a local ( to the MUA ) space, we disabled deleted in the pop3 daemon by commenting out one line of code in the C source, that which set the deletion flag. Without the flag set deletions did not occur. Given our unique situation then and how many revisions back it was I don't know if this suggestion would work for you. But what you ask, strictly speaking, could be done then, and may still be possible. Whether or not it's a good idea is another question only you can really answer. What really needs to exist ( in my mind, and it may be there now, I haven't looked to see what is provided in awhile ) is some mechanism used by the cyrus software to determine if a user connecting is either POP or IMAP, and only allow connections via the appropriate protocol. Whether cyrus were to maintain this information itself or get it from some other source, either ldap, hesiod, NIS, or whatever could be either configurable at runtime or build time. Since we no longer need such an option ( we've since gone all IMAP, which was the easier thing to do) we haven't pursued it. Regards, Earl Shannon Martin Schiøtz wrote: On 7/30/06, Daniel Eckl [EMAIL PROTECTED] wrote: That's a good idea. But this may have an unwanted side effect: A pop3 client which is not configured to leave messages on server might ignore the possibility that messages on the server might be seen already. If the client doesn't compare fetched and unfetched mails with the UIDL command, it might always fetch all messages from the server over and over again, because it thinks it has deleted all fetched mails and all mails on server must be new. So would act al clients which don't use the UIDL command at all, because they miss the leave messages on server option at all. I see your point! I think have a better idea (but without knowing the reason for the posters request, it might be unusable, I don't know): The main mail service is build around imap and webmail also sa-learn ham is based on the INBOX. Actually I was thinking about not to provide POP3 at all. But if it was possible to force POP3 clients to leave copy on server I would have no worry also to provide POP3. Use sieve script to copy all incoming messages to another folder. The POP3 clients keep fetching and truncating the INBOX but all messages are still on the server in another folder. In case some of them are needed again, one could use a webmail IMAP client to view them or copy some of them into the inbox to be fetched again. I can see this would be a solution but anyway it would be taking to much space on the server. I think I will not to provide POP3 at all. Thanks! - Martin Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: Ximian Evolution client / local imapd
Hello, Such a connection might be useful if the imap server expected to have the client running locally. I think the UW Imap server does that, but I'm only guessing. As others have already pointed out, doing it with Cyrus is not only a bad idea, it probably won't work. Regards, Earl Shannon Simon Matter wrote: On Fri, 2005-08-19 at 21:18 +, Brian Huffman wrote: All, Evolution has an option to remotely connect to an imap server that you otherwise can not connect to by using means such as ssh. It allows a custom command to connect to the imap server. The default is: ssh -C -l %u %h exec /usr/sbin/imapd Don't even think about running imapd by hand, only cyrus master can do it. It simply won't work. Simon Why would you want to do that instead of using IMAP SSL (or TLS)? Cyrus servers are ment not to be accessible by ordinary users (ie. more secure to local attacks). O. -- Ondrej Sury [EMAIL PROTECTED] Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
Re: Funding Cyrus High Availability
Hello, Question: Are people looking at this as both redundancy and performance, or just redundance? My $0.02 worth. Performance gains can be found the traditional way, ie, faster hardware, etc.Our biggest need is for redundance. If something goes wrong on one machine we still need to be able to let users use email. --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
All messages marked as New
Hello, We've recently moved accounts from servers running 1.5.14 to 2.1.11. We've had several users report that all their messages are being shown as New ( Unread ) by their email client and remain so despite reading the messages. Removing the users seen file fixes the problem for new mail. We however do not know why this is happening. Has anyone else seen similar problems? Is there a better fix available, ie, one that can read the seen status of the old server's format and translate that to the new server? Regards, Earl Shannon -- Systems Programmer, Computing Services, Information Technology NC State University. http://www.earl.ncsu.edu
Re: presubscribing mailboxes
Hello, An alternative is to authenticate as one user, probably the admin user, and be authorized to act on behalf of the account. That said, I don't know how to do this. If someone has an example of some perl code using the Perl IMAP Admin module that does this and is able to post it to the list I would appreciate it. Currently I do what you do when I need to subscribe a user to some mailboxes in their account. Edit their subscription files. Would definitely prefere being able to do this via the network instead of logging into the box. Regards, Earl Shannon -- Systems Programmer, Computing Services, Information Technology NC State University. http://www.earl.ncsu.edu Luca Olivetti wrote: [sent this yesterday but didn't appear on the list. something wrong with the list server?] When I create a new user, I create some extra mailboxes: user.name.sent user.name.drafts user.name.templates While we were using netscape 4, during the first login it would subscribe to all existing mailboxes, now that we've switched to mozilla it doesn't, so I have to presubscribe these mailboxes while creating the user. The only way I found is a hack I'm not really happy with: SUBFILE=/var/lib/imap/user/$initial/$LOGIN.sub echo -e user.$LOGIN.sent\011 $SUBFILE echo -e user.$LOGIN.plantillas\011 $SUBFILE echo -e user.$LOGIN.borradores\011 $SUBFILE chown cyrus.mail $SUBFILE chmod 600 $SUBFILE Is there a better way? TIA -- Luca Olivetti Wetron Automatización S.A. http://www.wetron.es/ Tel. +34 93 5883004 Fax +34 93 5883007
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. RANT 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. /RANT 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: restoring from backup individual messages/folders
Hello, This is practically verbatim what we do at NCSU. We create a folder named BACKUP in their regular inbox and then restore their account from the requested date to that folder. Subscriptions need to be updated and quotas set for the BACKUP folder. We then delete it after two weeks. :) We do limit the number of restoration attempts to find something though, to two. We also only keep four weeks of data on tape. We use Veritas with a tape library for the backups. Worlds away better than what we were doing with ufsdump/ufsrestore. The idea of not actually deleting a message when a user flags it to go away has other implications besides easy restoration. How does that affect user quota, for example? File space usage for the machine in general, ie, how much data should you keep? Measure that in terms of time or space, or some mix of the two? Satisfactory answers to these questions would probably require a substantion redesign of the IMAP server software. Regards, Earl Shannon -- Systems Programmer, Computing Services, Information Technology NC State University. http://www.earl.ncsu.edu Dave McMurtrie wrote: On Thu, 2 Jan 2003, Hein Roehrig wrote: I would be interested in what kind of servicesstrategies admins here offer to users regarding restoring accidentally deleted (expunged) messages. In particular, while it is relatively safe to backup a running Cyrus and in the case of desaster reconstruct all mailboxes, stopping Cyrus for reconstructing a single mailbox seems unacceptable. I'd prefer it if we only did disaster recovery restores here (if we delete your data, we'll get if back -- if you delete it, tough rocks) but that's not the case. When a user requests a restore, we create (via IMAP protocol) a subfolder in their INBOX and give it a separate quota root. This subfolder will contain their restored INBOX and all restored subfolders. The mail files are copied into the filesystem and then the restore folders are reconstructed (which doesn't require us to stop cyrus). The user is then free to browse through their restore subfolders and copy any messages they need. After 14 days, their entire restore hierarchy is deleted. Even though this whole process is automated, it's still a pain. Thanks, Dave -- Dave McMurtrie, Systems Programmer University of Pittsburgh Computing Services and Systems Development, Development Services -- UNIX and VMS Services 717P Cathedral of Learning (412)-624-6413 -- Systems Programmer, Computing Services, Information Technology NC State University. http://www.earl.ncsu.edu
