Re: Impossible Empty Keyword

On Mon, 27 Jan 2014, Mabry Tyson wrote:

> On Friday night, we upgraded our imapd server's hardware & OS to Solaris 10 
> from Solaris 8.  Both machines are running UW imap 2007f.  We recompiled it 
> on the new machine.
>
> As our users come back, we're seeing some log messages
>
> Jan 27 10:38:40 HHHHH imapd[8566]: [ID 273760 mail.alert] Fatal error 
> user=XXXXXX host=XXXXXXX.AI.SRI.COM [NNN.NNN.NNN.NNN] 
> mbx=/path/to/a/mail/folder: impossible empty keyword
> Jan 27 10:38:40 HHHHH imapd[8566]: [ID 746981 mail.alert] IMAP toolkit crash: 
> impossible empty keyword
>
> I don't yet know how many mail folders are impacted by this.  I don't know 
> what triggers these errors (no one has complained yet)
>
> I see this error message in mix.c (our mail is stored as mix mail folders), 
> but I haven't yet looked to see what the code is doing (but I will).
> If someone else has run into this issue and can shed any light, please let me 
> know.

I wouldn't even bother trying to dig into the UW imap code. Go get Mark's
"Panda" kit and try that first. I know that there were a number of low-level
warts in the UW code that Mark fixed in his Panda kit that probably aren't going
to be fixed in the UW distro and I know that there's been at least one
addtional patch added to the current Panda kit after Mark's death.