Front End not forwarding requests to the backend

[Alberto Cardenas]

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


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. 


Any guidance would be appreciated.  I have spent several days working in this problem without getting any progress at all.


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
}




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