IMAP server configured by openSUSE 10.3 installer rejects Outlook Express connection

[UweG]

Hi,

I get an error during the first IMAP connection to cyrus after an account in Outlook Express is created. The message is: "Bei der Verbindung zum Server ist ein Fehler aufgetreten" ("The connection to the server has failed"). Code: 800ccc0e

During the first connection Outlook Express shows a dialog box "Alle Ordner dieses Kontos sind zur Zeit ausgeblendet. Möchten Sie eine Liste der zur Verfügung stehenden Ordner sehen?" (sense in english: All folder are hidden yet. Do you want to see all available folders?) This is the point where the error appears.

The user was created by the OX admin GUI interface and makes no problems when polled by a POP3 account. Note that I configured a second account in Outlook Express as POP3 account for testing purposes so that the same mailbox is polled by a POP3 account as well as by an IMAP4 account. I don't know of an option on cyrus that a mailbox has to be configured either as POP3 mailbox or IMAP4 mailbox and I didn't find such an option in the GUI. Because all was configured by the openSUSE 10.3 installer (BF_6_4_2) I expect that cyrus should work without need to be reconfigured.

The successful polling initiated by the POP3 account is logged in the following way:

---------- galle Mon Jun 16 23:33:38 2008

>1213652018>+OK Mailbox locked and ready
<1213652018<STAT
>1213652018>+OK 0 0
<1213652018<QUIT
>1213652018>+OK

Unfortunately I cannot see any records with the failed IMAP4 connection. I already posted into the openSUSE list because of that. A login with imtest with that user works correctly and is logged. A login with cyradm with that user is working as well. That shows that an authentication problem can be excluded. The firewall was disabled. Wireshark shows that three TCP packet pairs (request/response) on the port 143 so that Outlook Express really reaches the server:

send by Outlook Express:
NOP
NOP
SACK permitted

response send by cyrus with flags RST and ACK

This is repeated 3 times.
Please help.

Regards,
Uwe


PS: my imapd.conf and cyrus.conf may be helpful

configdirectory: /var/lib/imap
defaultpartition: default
partition-default: /var/spool/imap
sievedir: /var/lib/sieve
altnamespace: yes
unixhierarchysep: yes
lmtp_downcase_rcpt: yes
allowanonymouslogin: no
popminpoll: 0
umask: 077
sieveusehomedir: false
hashimapspool: true
allowplaintext: yes
sasl_mech_list: PLAIN LOGIN
loginrealms: domestic.de
sasl_pwcheck_method: saslauthd
tls_ca_path: /usr/ssl/CA
tls_session_timeout: 1440
tls_cipher_list: TLSv1+HIGH:!aNULL:@STRENGTH
lmtpsocket: /var/run/cyrus/socket/lmtp
lmtp_overquota_perm_failure: no
admins: oxadmin
autocreatequota: 10000
reject8bit: no
quotawarn: 90
timeout: 30
poptimeout: 10
dracinterval: 0
drachost: localhost
tls_cert_file: /etc/ssl/certs/eecert.pem
tls_key_file: /etc/ssl/private/eekey.pem

------------------------------------------------------------------------------------
cyrus.conf:

# standard standalone server implementation

START {
# do not delete this entry!
recover cmd="ctl_cyrusdb -r"

# this is only necessary if using idled for IMAP IDLE
idled cmd="idled"
}

# UNIX sockets start with a slash and are put into /var/lib/imap/socket
SERVICES {
# add or remove based on preferences
imap cmd="imapd" listen="127.0.0.1:imap" prefork=0
imaps cmd="imapd -s" listen="imaps" prefork=0
pop3 cmd="pop3d" listen="pop3" prefork=0
# pop3s cmd="pop3d -s" listen="pop3s" prefork=0
sieve cmd="timsieved" listen="sieve" prefork=0

# at least one LMTP is required for delivery
# lmtp cmd="lmtpd" listen="lmtp" prefork=0
lmtpunix cmd="lmtpd" listen="/var/lib/imap/socket/lmtp" prefork=0

# this is only necessary if using notifications
# notify cmd="notifyd" listen="/var/lib/imap/socket/notify" proto="udp" prefork=1
}

EVENTS {
# this is required
checkpoint cmd="ctl_cyrusdb -c" period=30

# this is only necessary if using duplicate delivery suppression
delprune cmd="cyr_expire -E 3" at=0400

# this is only necessary if caching TLS sessions
tlsprune cmd="tls_prune" at=0400

# Uncomment the next entry, if you want to automatically remove
# old messages of EVERY user.
# This example calls ipurge every 60 minutes and ipurge will delete
# ALL messages older then 30 days.
# enter 'man 8 ipurge' for more details

# cleanup cmd="ipurge -d 30 -f" period=60
}

[Gertjan]

Did you tell OE to use SSL (port 993)? The IMAP port (143) can only be reached by 127.0.0.1 in the default OpenSUSE 10.3 setup.
If you don't want to use SSL and want to enable to connect to port 143 from everywhere, remove the 127.0.0.1: part in cyrus.conf:

imap cmd="imapd" listen="[B]127.0.0.1:[/B]imap" prefork=0
imaps cmd="imapd -s" listen="imaps" prefork=0

[UweG]

Thanks a lot. OE indeed was configured to use IMAP (143). I was puzzled by the fact that no failure was logged by cyrus, although successful logins were logged. If there were log records I would have seen this myself. I don't use any filter statements in my syslog-ng.conf and I see in fact some records with the debug level in syslog-ng. Both shows that nothing is filtered in my syslog-ng configuration. If you perhaps know what can be the cause of the missing records please let me know that. But the main issue is resolved. Thank you very much.