ptloader issues preventing login

[webmaster at artturnip.co.uk]

Hello!

After about two hours of googling and fiddling around, I'm still having a
problem with users logging in. The issue seems to be with ptloader which
refuses to work... Below is an excerpt from mail.log and my imapd.conf

The situation:
(Attempted) multi domain setup however only one works.
Debian 7
Kolab 3.3

imap.conf:
configdirectory: /var/lib/imap
partition-default: /var/spool/imap
admins: cyrus-admin
sievedir: /var/lib/imap/sieve
sendmail: /usr/sbin/sendmail
sasl_pwcheck_method: auxprop saslauthd
sasl_mech_list: PLAIN LOGIN
allowplaintext: no
tls_cert_file: /etc/ssl/certs/example.crt
tls_key_file: /etc/ssl/private/example.key
tls_ca_file: /etc/ssl/certs/example.ca-chain.pem
# uncomment this if you're operating in a DSCP environment (RFC-4594)
# qosmarking: af13
auth_mech: pts
pts_module: ldap
ldap_servers: ldaps://localhost:636
ldap_sasl: 0
ldap_base: dc=example,dc=com
ldap_bind_dn: uid=kolab-service,ou=Special Users,dc=example,dc=com
ldap_domain_base_dn: cn=kolab,cn=config
ldap_domain_filter:
(&(objectclass=domainrelatedobject)(associateddomain=%s))
ldap_domain_name_attribute: associatedDomain
ldap_domain_result_attribute: inetdomainbasedn
ldap_domain_scope: sub
ldap_password: ***
ldap_filter:
(|(&(|(uid=cyrus-admin)(uid=cyrus-murder))(uid=%U))(&(|(uid=%U)(mail=%U@
%d)(mail=%U@%r))(objectclass=kolabinetorgperson)))
ldap_user_attribute: mail
ldap_group_base: ou=groups,ou=people,dc=example,dc=com
ldap_group_filter:
(&(cn=%u)(objectclass=ldapsubentry)(objectclass=nsroledefinition))
ldap_group_scope: one
ldap_member_base: ou=groups,ou=people,dc=example,dc=com
ldap_member_method: attribute
ldap_member_attribute: nsrole
ldap_restart: 1
ldap_timeout: 10
ldap_time_limit: 10
unixhierarchysep: 1
virtdomains: userid
annotation_definitions: /etc/imapd.annotations.conf
sieve_extensions: fileinto reject envelope body vacation imapflags notify
include regex subaddress relational copy
allowallsubscribe: 0
allowusermoves: 1
altnamespace: 0
hashimapspool: 1
anysievefolder: 1
fulldirhash: 0
sieveusehomedir: 0
sieve_allowreferrals: 0
lmtp_downcase_rcpt: 1
lmtp_fuzzy_mailbox_match: 1
username_tolower: 1
deletedprefix: DELETED
delete_mode: delayed
expunge_mode: delayed
flushseenstate: 1
postuser: postuser

mail.log:
Feb 26 17:22:41 webmail imaps[22032]: starttls: TLSv1.2 with cipher
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Feb 26 17:22:41 webmail ptloader[22040]: starting: ptloader.c,v git2.5+0
Feb 26 17:22:41 webmail imaps[22032]: ptload(): bad response from ptloader
server: identifier not found
Feb 26 17:22:41 webmail imaps[22032]: ptload completely failed: unable to
canonify identifier: john.smith at example.com
Feb 26 17:22:41 webmail imaps[22032]: SASL bad userid authenticated
Feb 26 17:22:41 webmail imaps[22032]: badlogin: localhost [127.0.0.1] PLAIN
[SASL(-13): authentication failure: bad userid authenticated]
Feb 26 17:22:44 webmail imaps[21999]: starttls: TLSv1.2 with cipher
DHE-RSA-AES256-GCM-SHA384 (256/256 bits new) no authentication
Feb 26 17:22:45 webmail imaps[21999]: ptload(): empty response from
ptloader server
Feb 26 17:22:45 webmail imaps[21999]: ptload completely failed: unable to
canonify identifier: john.smith at example.com
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