Re: [Imap-uw] iPhone Mbox Corruption

[Bob Atkins]

Neal, The best advice I can offer you is to switch to mix mailbox format. It is way better than mbx and the Dovecot maildir format from a system i/o performance and cpu load standpoint. It also fully supports multiple simultaneous mailbox access. We build our own version of uw-imap and the only mod that we made to the mix format was to increase the size of the mix files from 1MB to 10MB because given today's multi-megabyte emails 1MB size mix files are far too small from an efficiency standpoint. Everything has been working flawlessly for us. An important note - make sure that you only allow imap service from the machine with the directly attached mail storage. You cannot allow access the mix mail store over nfs - corruption will always occur. In addition you should change the local mail delivery agent to use the uw-imap tmail for even greater performance and efficiency. Again, make sure that the local mail delivery happens on the same machine as the mail store and not over nfs. -- Bob Atkins   President/CEO Business Inter-net-working The Cure for the Common ISP! Phone: (310) 577-9450 Fax: (310) 577-3360 eMail: b...@digilink.net   Chuck Swiger wrote: On Jul 29, 2010, at 9:16 AM, Neal Morgan wrote: I saw a similar thread in the archive a few years back - but didn't see a post indicating the resolution. If it was Solaris + imapd-2007 + mbox, that was me. :-) The issue was never entirely resolved, although the patch Mark suggested seemed to help somewhat, which was something like (modulo line # fuzz): --- imapd.c~ 2010-07-29 10:55:17.000000000 -0700 +++ imapd.c 2010-07-29 10:55:49.000000000 -0700 @@ -100,8 +100,5 @@ if (setjmp (jmpenv)) { /* die if a signal handler say so */ /* in case we get borked now */ if (setjmp (jmpenv)) _exit (1); - /* need to close stream gracefully? */ - if (stream && !stream->lock && (stream->dtb->flags & DR_XPOINT)) - stream = mail_close (stream); ret = 1; /* set exit status */ } Over the longer term we ended up switching over to Dovecot + Maildir, but I'd still buy MRC a $BEVERAGE for UW-IMAP... Regards,

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