Cyrus IMAP server
i we are running cyrus-imapd 2.3 on centos 5.5 we are getting complains from users getting error messages saying Mailbox locked by POP Server, i understand that pop3 server can handle only 1 concurrent connection, can cyrus be configured to support more connection? Thank you. Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
On 21/10/10 16:43 +0200, JC Putter wrote: we are running cyrus-imapd 2.3 on centos 5.5 we are getting complains from users getting error messages saying Mailbox locked by POP Server, i understand that pop3 server can handle only 1 concurrent connection, can cyrus be configured to support more connection? We're getting a lot more of these complaints as well as our ISP customers start configuring email access on their phones and handhelds. The solution for us has been to encourage customers to reconfigure both devices (PC and phone) to use IMAP. The POP3 standard (RFC 1939) requires each connection to obtain an exclusive lock on a maildrop before continuing operations. It lacks the proper semantics to handle simultaneous access to a mailbox. -- Dan White Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
--On Thursday, October 21, 2010 16:43 +0200 JC Putter jancarel.put...@gmail.com wrote: i we are running cyrus-imapd 2.3 on centos 5.5 we are getting complains from users getting error messages saying Mailbox locked by POP Server, i understand that pop3 server can handle only 1 concurrent connection, can cyrus be configured to support more connection? The POP protocol requires the mailbox to be locked during a POP session. Joseph Brennan Columbia University Information Technology Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
Dan White wrote: On 21/10/10 16:43 +0200, JC Putter wrote: we are running cyrus-imapd 2.3 on centos 5.5 we are getting complains from users getting error messages saying Mailbox locked by POP Server, i understand that pop3 server can handle only 1 concurrent connection, can cyrus be configured to support more connection? We're getting a lot more of these complaints as well as our ISP customers start configuring email access on their phones and handhelds. The solution for us has been to encourage customers to reconfigure both devices (PC and phone) to use IMAP. The POP3 standard (RFC 1939) requires each connection to obtain an exclusive lock on a maildrop before continuing operations. It lacks the proper semantics to handle simultaneous access to a mailbox. Hi there, I went ahead and put this protocol limitation in my work-in-progress Deployment Guide document ;-) Kind regards, -- Jeroen van Meeuwen Senior Engineer, Kolab Systems AG e: vanmeeu...@kolabsys.com t: +316 42 801 403 w: http://www.kolabsys.com pgp: 9342 BF08 Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
Actually in Cyrus 2.4 you will find that it allows multiple concurrent pop connections. Each one gets a snapshot of the mailbox at the time it connects. All operations are to this snapshot. This is safe because the namelocking semantics ensure the message files won't be deleted until all open connections are closed, and the snapshot includes uids to let the pop3d find and delete the correct messages. So you'll be good in 2.4 :) Bron. Jeroen van Meeuwen (Kolab Systems) vanmeeu...@kolabsys.com wrote: Dan White wrote: On 21/10/10 16:43 +0200, JC Putter wrote: we are running cyrus-imapd 2.3 on centos 5.5 we are getting complains from users getting error messages saying Mailbox locked by POP Server, i understand that pop3 server can handle only 1 concurrent connection, can cyrus be configured to support more connection? We're getting a lot more of these complaints as well as our ISP customers start configuring email access on their phones and handhelds. The solution for us has been to encourage customers to reconfigure both devices (PC and phone) to use IMAP. The POP3 standard (RFC 1939) requires each connection to obtain an exclusive lock on a maildrop before continuing operations. It lacks the proper semantics to handle simultaneous access to a mailbox. Hi there, I went ahead and put this protocol limitation in my work-in-progress Deployment Guide document ;-) Kind regards, -- Jeroen van Meeuwen Senior Engineer, Kolab Systems AG e: vanmeeu...@kolabsys.com t: +316 42 801 403 w: http://www.kolabsys.com pgp: 9342 BF08 Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ -- Sent from my Android phone with K-9 Mail. Please excuse my brevity. Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
Bron Gondwana wrote: Actually in Cyrus 2.4 you will find that it allows multiple concurrent pop connections. Each one gets a snapshot of the mailbox at the time it connects. All operations are to this snapshot. This is safe because the namelocking semantics ensure the message files won't be deleted until all open connections are closed, and the snapshot includes uids to let the pop3d find and delete the correct messages. So you'll be good in 2.4 :) Worth noting and putting in the documentation ;-) Kind regards, -- Jeroen van Meeuwen Senior Engineer, Kolab Systems AG e: vanmeeu...@kolabsys.com t: +316 42 801 403 w: http://www.kolabsys.com pgp: 9342 BF08 Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
Re: Cyrus IMAP server
On Fri, Oct 22, 2010 at 01:12:39AM +0100, Jeroen van Meeuwen (Kolab Systems) wrote: Bron Gondwana wrote: Actually in Cyrus 2.4 you will find that it allows multiple concurrent pop connections. Each one gets a snapshot of the mailbox at the time it connects. All operations are to this snapshot. This is safe because the namelocking semantics ensure the message files won't be deleted until all open connections are closed, and the snapshot includes uids to let the pop3d find and delete the correct messages. So you'll be good in 2.4 :) Worth noting and putting in the documentation ;-) Yeah, I kind of forgot about it. It was just a side effect of having decent locking :) Bron. Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
