Need help with mailbox error.

[tobias.gustavsson at granlund.biz]

Hi everybody.

I am hoping someone can help me with a problem I have with Postfix (v2.3.3) and Cyrus (v2.3.7-Invoca-RPM-2.3.7-1.1.el5) running on RHEL5.1. We are trying to migrate from a Debian Sarge system to the RHEL5.1 server.

There seems to be a problem when cyrus/lmtpunix gets a mail and tries to save it to a mailbox. I get the following error in maillog: 
May 15 10:49:05 mail1 lmtpunix[25257]: verify_user(user.username) failed: Mailbox does not exist.
I will include a longer paste further down. 

I have created the mailbox with cyradm.
[root at mail1]# cyradm localhost
IMAP Password:
localhost.localdomain> lm
username (\HasNoChildren)
root (\HasNoChildren)
user^username (\HasNoChildren)
user^root (\HasNoChildren)
userusername (\HasNoChildren)
userroot (\HasNoChildren)
localhost.localdomain>


I am probably missing something obvious but I can't for the life of me understand what.
We are using multiple domains in postfix which seems to work fine as the correct username is forwarded to the lmtpunix daemon.

/var/log/maillog
May 15 10:48:56 mail1 postfix/smtpd[25246]: connect from localhost.localdomain[127.0.0.1]
May 15 10:48:56 mail1 postfix/smtpd[25246]: lost connection after CONNECT from localhost.localdomain[127.0.0.1]
May 15 10:48:56 mail1 postfix/smtpd[25246]: disconnect from localhost.localdomain[127.0.0.1]
May 15 10:49:05 mail1 postfix/smtpd[25246]: connect from localhost.localdomain[127.0.0.1]
May 15 10:49:05 mail1 postfix/smtpd[25246]: C5EC750083: client=localhost.localdomain[127.0.0.1]
May 15 10:49:05 mail1 postfix/cleanup[25266]: C5EC750083: message-id=<20080515084905.C5EC750083 at mail.domain1>
May 15 10:49:05 mail1 postfix/qmgr[25226]: C5EC750083: from=<user at test.local>, size=379, nrcpt=1 (queue active)
May 15 10:49:05 mail1 postfix/smtpd[25246]: disconnect from localhost.localdomain[127.0.0.1]
May 15 10:49:05 mail1 lmtpunix[25257]: accepted connection
May 15 10:49:05 mail1 lmtpunix[25257]: lmtp connection preauth'd as postman
May 15 10:49:05 mail1 lmtpunix[25257]: verify_user(user.username) failed: Mailbox does not exist
May 15 10:49:05 mail1 master[25268]: about to exec /usr/lib/cyrus-imapd/lmtpd
May 15 10:49:05 mail1 lmtpunix[25268]: executed
May 15 10:49:05 mail1 postfix/lmtp[25267]: C5EC750083: to=<username at mail.domain1 >, orig_to=<username at domain1>, relay=mail.domain1[/var/lib/imap/socket/lmtp], delay=0.12, delays=0.05/0.02/0/0.04, dsn=5.1.1, status=bounced (host mail.domain[/var/lib/imap/socket/lmtp] said: 550-Mailbox unknown.  Either there is no mailbox associated with this 550-name or you do not have authorization to see it. 550 5.1.1 User unknown (in reply to RCPT TO command))
May 15 10:49:05 mail1 postfix/cleanup[25266]: DD51250086: message-id=<20080515084905.DD51250086 at mail.domain1>
May 15 10:49:05 mail1 postfix/qmgr[25226]: DD51250086: from=<>, size=2557, nrcpt=1 (queue active)
May 15 10:49:05 mail1 postfix/bounce[25269]: C5EC750083: sender non-delivery notification: DD51250086
May 15 10:49:05 mail1 postfix/qmgr[25226]: C5EC750083: removed 

/etc/postfix/main.cf
smtpd_banner = $myhostname ESMTP $mail_name (Linux)
biff = no
append_dot_mydomain = no
myhostname = mail.domain1
relayhost =
mynetworks = /etc/postfix/mynetworks
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
show_user_unknown_table_name = no
mydestination = hash:/etc/postfix/mydestination_domains
local_recipient_maps = proxy:unix:passwd.byname, hash:/etc/postfix/virtusertable
virtual_maps = hash:/etc/postfix/virtusertable, hash:/etc/aliases
local_transport = lmtp:unix:/var/lib/imap/socket/lmtp
strict_rfc821_envelopes=yes
header_checks = regexp:/etc/postfix/header_checks
smtpd_sender_restrictions =
        permit_mynetworks,
        reject_non_fqdn_sender,
        reject_unknown_sender_domain
lmtp_destination_concurrency_limit = 150
message_size_limit = 52428800

/etc/cyrus.conf
START {
  recover       cmd="ctl_cyrusdb -r"
  idled         cmd="idled"
}
SERVICES {
  imap          cmd="imapd" listen="imap" prefork=5
  pop3          cmd="pop3d" listen="pop3" prefork=3
  sieve         cmd="timsieved" listen="sieve" prefork=0
  lmtpunix      cmd="lmtpd" listen="/var/lib/imap/socket/lmtp" prefork=1
}
EVENTS {
  checkpoint    cmd="ctl_cyrusdb -c" period=30
  delprune      cmd="cyr_expire -E 3" at=0400
  tlsprune      cmd="tls_prune" at=0400
}

/etc/imapd.conf
configdirectory: /var/lib/imap
defaultpartition: default
partition-default: /var/spool/imap
altnamespace: yes
unixhierarchysep: yes
lmtp_downcase_rcpt: yes
admins: cyrus postfix root
lmtp_admins: postman
allowanonymouslogin: no
popminpoll: 0
umask: 077
sendmail: /usr/sbin/sendmail
sieveusehomedir: false
sievedir: /var/spool/sieve
hashimapspool: true
allowplaintext: yes
sasl_mech_list: PLAIN
allowapop: no
sasl_minimum_layer: 0
sasl_pwcheck_method: saslauthd
sasl_auto_transition: no
tls_session_timeout: 1440
tls_cipher_list: TLSv1:SSLv3:SSLv2:!NULL:!EXPORT:!DES:!LOW:@STRENGTH

Thanks in advance for any help. 

Regards
Tobias