Hi, Environment:>10000 Users (LDAP)Solaris 10 / sparc imap: dovecot-1.1.10 (pam-unix, no direct LDAP access) pop: dovecot-1.0.14 on another server (pam-unix, no direct LDAP access) mta: postfix (pam-unix, no direct LDAP access) procmail (pam-unix, no direct LDAP access) Filesystems: Inboxes and IMAP-home are on two different SAM-FS volumes. Problem description: Inboxes of users are disappearing / are truncated. we are using dovecot-1.1.0 since two month as main IMAP server. It replaced our long running but old version of UW-IMAP. Till the last week we had no problems and it worked quite well and the whole mail system worked in this configuration since several years. But since a week we receive more and more complaints regarding truncated/deleted mailboxes. First, we assumed user/client errors, but as such messages arrive more frequently, we did a deep analysis of the issue. The only common component of our mail system (postfix (local), procmail, pop, imap) that all concerned users have accessed, was dovecot-imap v. 1.1.10. We have no locking problems, we use fcntl(), dotlock for all mail components. We tested this with a small perl script and locking works fine (no delivery to a locked mailbox and so on...) Finally, all indications point to a bug in dovecot. Google and searches in this mailing list did not come up with any valuable results. Are there any known bugs / configuration problems concerned to the described problem? I greatly appreciate any help! Thx in advance Harald Strack
Harald Strack wrote:> imap: dovecot-1.1.10 (pam-unix, no direct LDAP access) > pop: dovecot-1.0.14 on another server (pam-unix, no direct LDAP access) > we are using dovecot-1.1.0 since two month as main IMAP server. ItThese are all very very old. These versions certainly have bugs, perhaps also one which you stumbled on. I suggest you upgrade to 1.1.20 or, better, to 1.2.8 (some configuration changes may be needed). If the problem remains afterwards, there might be people willing to help. HTH, Jakob Curdes
On Mon, 2009-12-14 at 16:49 +0100, Harald Strack wrote:> imap: dovecot-1.1.10 (pam-unix, no direct LDAP access) > pop: dovecot-1.0.14 on another server (pam-unix, no direct LDAP access) > mta: postfix (pam-unix, no direct LDAP access) > procmail (pam-unix, no direct LDAP access) > > Filesystems: > Inboxes and IMAP-home are on two different SAM-FS volumes. > > Problem description: > Inboxes of users are disappearing / are truncated.So SAM-FS is some shared filesystem and you have multiple servers accessing mails from there?> We have no locking problems, we use fcntl(), dotlock for all mail > components. We tested this with a small perl script and locking works > fine (no delivery to a locked mailbox and so on...)But did you check that all programs writing to mailboxes use the same locking? Most importantly procmail vs. dovecot might not use the exact same locking by default. http://wiki.dovecot.org/MboxLocking -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 197 bytes Desc: This is a digitally signed message part URL: <http://dovecot.org/pipermail/dovecot/attachments/20091215/e4d3c156/attachment-0002.bin>