Sendmail no delivering to imap inbox

[Peter Löfkvist]

Hi
I'm having some problems making sendmail and cyrus working together.
Sendmail won't or can't deliver the inbound mails to the user's inbox.
The mail ends up in /var/spool/mqueue/q9SD....  and I just get a message
in /var/log/maillog:

Oct 28 14:05:56 tourist sendmail[1402]: g9SD5tF01400:
to=<peter at tourist.stockholmopen.net>, delay=00:00:00, xdelay=00:00:00,
mailer=cyrus, pri=30849, relay=localhost, dsn=4.2.0, stat=Deferred: 451
4.3.2 cannot create temporary file: File exists:

It just says "cannot create temporary file: File exist:", Has anyone seen
this before? My imapd.conf looks like this:

configdirectory: /var/imap
partition-default: /var/spool/imap
admins: cyrus root
sasl_pwcheck_method: saslauthd

And my sendmail.mc:

divert(0)dnl
VERSIONID(`$Id: cyrusproto.mc,v 8.7 1999/09/07 14:57:10 ca Exp $')
OSTYPE(linux)dnl
define(`confBIND_OPTS',`-DNSRCH -DEFNAMES')
define(`confLOCAL_MAILER', `cyrus')
define(`CYRUS_MAILER_FLAGS',`A5 at w')
FEATURE(`nocanonify')
FEATURE(`always_add_domain')
MAILER(`local')
MAILER(`smtp')
MAILER(`cyrus')

MAILER_DEFINITIONS
Mcyrus,         P=[IPC], F=lsDFMnqA@/:|SmXz, E=\r\n,
                S=EnvFromL, R=EnvToL/HdrToL, T=DNS/RFC822/X-Unix,
                A=FILE /var/imap/socket/lmtp
LOCAL_RULE_0
Rbb + $+ < @ $=w . >    $#cyrusbb $: $1

I have çreated the mailbox for the user peter by cyradm: cm user.peter and
can login locally to the imap server with pine.
I'm using cyrus 2.1.19 and the sendmail that was shipped with RH 7.3.
Help much appreciated!

/Peter