Hi Timo, dovecot 1.2.0 is great! Faster and more stable on mboxes that 1.1.x by far... good job :-) Today I stumbled over a strange problem when I tried to subscribe an existing Mailbox (mbox), which doesn't work. Thunderbird IMAP log -------------------- 9932[4124558]: 40f3498:imap.fh-trier.de:A:SendData: 11 subscribe "Mail/Archiv/1998" 9932[4124558]: ReadNextLine [stream=403f280 nb=108 needmore=0] 9932[4124558]: 40f3498:imap.fh-trier.de:A:CreateNewLineFromSocket: 11 NO [SERVERBUG] Internal error occurred. Refer to server log for more information. [2009-07-06 08:14:32] Server log ---------- Jul 6 08:14:32 trevi mail:info dovecot: IMAP(beckerr): Namespace Mail/: Using permissions from /u/f0/rzuser/beckerr/Mail: mode=0700 gid=-1 Jul 6 08:14:32 trevi mail:err|error dovecot: IMAP(beckerr): fchown(/u/f0/rzuser/beckerr/Mail/.subscriptions.lock, -1, -1) failed: Invalid argument Jul 6 08:14:32 trevi mail:err|error dovecot: IMAP(beckerr): file_dotlock_open() failed with subscription file /u/f0/rzuser/beckerr/Mail/.subscriptions: Invalid argument The error just appears on NFS mounted shared and I'm not sure if AIX or netapp is the cause. So to determine the real problem is not easy, but to fix it is: While uid and gid are both -1 the call could be suppressed, because nothing is really changed: --- ./lib/file-dotlock.c.org 2009-07-06 09:25:14.000000000 +0200 +++ ./lib/file-dotlock.c 2009-07-06 09:24:48.000000000 +0200 @@ -780,7 +780,7 @@ fd = file_dotlock_open(set, path, flags, &dotlock); umask(old_mask); - if (fd != -1) { + if (fd != -1 && (uid != -1 || gid != -1)) { if (fchown(fd, uid, gid) < 0) { if (errno == EPERM && uid == (uid_t)-1) { i_error("%s", eperm_error_get_chgrp("fchown", Ralf -- ______________________________________________________________________ Dipl.-Inform. (FH) Ralf Becker Rechenzentrum (r/ft) der FH Trier (Network|Mail|Web|Firewall) University of applied sciences Administrator Schneidershof, D-54293 Trier Mail: beckerr@fh-trier.de Fon: +49 651 8103 499 Web: http://www.fh-trier.de/~beckerr Fax: +49 651 8103 214 PubKey: http://www.fh-trier.de/~beckerr Crypto: GnuPG, S/MIME ______________________________________________________________________ Wenn Gott gewollt haette, dass E-Mail in HTML geschrieben wuerden, endeten Gebete traditionell mit </amen>. (Tom Listen)