Hello Michael,
You were right, I solved my problem adding the servername in imap.conf file at
the backend server. Thank you very much!
Regards,
Alberto
-----Original Message-----
From: Michael Menge via Info-cyrus <info-cyrus@lists.andrew.cmu.edu>
To: info-cyrus <info-cyrus@lists.andrew.cmu.edu>
Sent: Mon, Nov 7, 2016 3:33 am
Subject: Re: Front End not forwarding requests to the backend
Hi,Quoting Alberto Cardenas via Info-cyrus <info-cyrus@lists.andrew.cmu.edu>:>
Hello,>>> I'm trying to setup Cyrus Murder for testing and have three virtual
> machines for this purpose (frontend, mupdate and backend). The three >
machines are running Centos 6.5, SASL 2.1.23 and Cyrus 2.3.16>you might want to
consider using a more recent cyrus Version. Cyrus 2.3.16is about 7 years old.
2.5.10 is the latest stable, 3.0 will be coming outsoon. I don't think it has
something to do with your problems but, therehave been many bugfixes and
improvements since 2.3. And if you set up anew system it would make things
easier in the future.>> Looks like communication from frontend to muptade and
from backend > to mupdate is working fine since I can list the mailboxes
created in > the backend using the “cyradm -u cyrus localhost” and “lm”
commands, > which shows the same user’s mailboxes result on the three boxes.>>
The problem seems to be between the frontend and the backend since > the
frontend is not forwarding the imap requests to the backend. To > test this, I
am using the command “telnet localhost 143” on the > frontend server. Once
that I get connected and authenticated, I > issue the command “select inbox”,
but I receive the message “NO > Server(s) unavailable to complete operation”.
In the > /usr/log/maillog file there is an error message that says “failed: >
Connection timed out”>>> I have not configured yet the smtp server, not sure if
it is > required, so I am trying to focus to get the imap part working.>The
smtp server is needed to for the mail delivery and sieve redirectsand vacation
but not for the imap access, so you can configure it later.>> Any guidance
would be appreciated. I have spent several days > working in this problem
without getting any progress at all.First, you din't set servername in you
backend imapd.conf, which could leadto the problem that the wrong name is used
in the mailbox.db on the mupdate server.You can check that name used to
register the created mailboxes on the mupdate bymupdate> ctl_mboxlist -dThe 3.
column is the name of the backend follwod by the partition name seperated by
!Make sure that the name used resolves to the correct ip address and the the
backendis listening on the imap port on this ipThe forndend needs to be able to
connect to the backend on the imap port. You can test thiswith telnet, but you
can also use imtest which can help you to speak starttls.Also check your audit
logs on the frontend, selinux tends to block wanted connections.also "netstat
-tupen | grep :143" can help to check the connection between frontend and
backend.>>> Here are my configuration files:> Frontend’s imap.conf>
configdirectory: /var/lib/imap> partition-default: /var/spool/imap> admins:
cyrus murder> sievedir: /var/lib/imap/sieve> sendmail: /usr/sbin/sendmail>
hashimapspool: true> sasl_pwcheck_method: auxprop> sasl_mech_list: PLAIN>
#tls_cert_file: /etc/pki/cyrus-imapd/cyrus-imapd.pem> #tls_key_file:
/etc/pki/cyrus-imapd/cyrus-imapd.pem> #tls_ca_file:
/etc/pki/tls/certs/ca-bundle.crt> allowplaintext: yes> mupdate_server:
cyrus-mupdate.cvacyrus.com> mupdate_port: 3905> mupdate_username: murder>
mupdate_authname: murder> mupdate_password: cvacva> cyrus-backend2_password:
cvacva> proxy_authname: murder>>> Frontend’s cyrus.conf> START {> recover
cmd="ctl_cyrusdb -r"> idled cmd="idled"> }> SERVICES {> mupdate
cmd="mupdate" listen=3905 prefork=1> imap cmd="proxyd" listen="imap"
prefork=5> }> EVENTS {> checkpoint cmd="ctl_cyrusdb -c" period=30>
delprune cmd="cyr_expire -E 3" at=0400> tlsprune cmd="tls_prune"
at=0400> }>>>>> Backend’s imap.conf> configdirectory: /var/lib/imap>
partition-default: /var/spool/imap> admins: cyrus murder> sievedir:
/var/lib/imap/sieve> sendmail: /usr/sbin/sendmail> hashimapspool: true>
sasl_pwcheck_method: auxprop> sasl_mech_list: PLAIN> altnamespace: yes>
allowplaintext: yes> proxyservers: murder> mupdate_server:
cyrus-mupdate.cvacyrus.com> mupdate_port: 3905> mupdate_username: murder>
mupdate_authname: murder> mupdate_password: cvacva>>> Backend’s cyrus.conf>
START {> recover cmd="ctl_cyrusdb -r"> idled cmd="idled">
mupdatepush cmd="ctl_mboxlist -m"> }> SERVICES {> imap cmd="imapd"
listen="imap" prefork=5> }> EVENTS {> checkpoint cmd="ctl_cyrusdb -c"
period=30> delprune cmd="cyr_expire -E 3" at=0400> tlsprune
cmd="tls_prune" at=0400> }>>> Mupdate’s imap.conf> configdirectory:
/var/lib/imap> partition-default: /var/spool/imap> admins: cyrus murder>
sievedir: /var/lib/imap/sieve> sendmail: /usr/sbin/sendmail> hashimapspool:
true> sasl_pwcheck_method: auxprop> sasl_mech_list: PLAIN> allowplaintext: 1>>>
Mupsate’s cyrus.conf> START {> recover cmd="ctl_cyrusdb -r"> idled
cmd="idled"> }> SERVICES {> imap cmd="imapd" listen="imap"
prefork=5> mupdate cmd="mupdate -m" listen="mupdate" prefork=1> }> EVENTS {>
checkpoint cmd="ctl_cyrusdb -c" period=30> delprune cmd="cyr_expire -E
3" at=0400> tlsprune cmd="tls_prune" at=0400>
}--------------------------------------------------------------------------------M.Menge
Tel.: (49) 7071/29-70316Universität Tübingen Fax.: (49)
7071/29-5912Zentrum für Datenverarbeitung mail:
michael.me...@zdv.uni-tuebingen.dewächterstraße 7672074 Tübingen----Cyrus Home
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