cyradm not work from remote machine

[Andrew B. PAnphiloff]

When I try use cyradm from localhost all works fine.
I type "cyradm --user=cyrus localhost" and can list/create/delete mailboxes,
but when I change localhost to domain.tld works only authentication, I can't
even list mailboxes!

from man imapd.conf:
       virtdomains: off
            Enable  virtual  domain  support.   If enabled, the user's 
domain will be determined by splitting a fully qualified userid at the
            last '@' or '%' symbol.  If the userid is unqualified, and 
the virtdomains option is set to "on", then the domain will be  deter-
            mined  by  doing a reverse lookup on the IP address of the 
incoming network interface, otherwise the user is assumed to be in the
            default domain (if set).

So, if I write to /etc/hosts:
127.0.0.1   localhost
<my ip>     localhost
cyradm works fine, but I don't want resolve my ip address as localhost :)
How can I change this behaviour of cyrus ?

imapd.conf:
=========================8<============================
configdirectory:        /var/imap
partition-default:      /var/spool/imap
sievedir:               /var/imap/sieve
tls_ca_path:            /etc/ssl/certs
tls_cert_file:          /etc/ssl/cyrus/server.crt
tls_key_file:           /etc/ssl/cyrus/server.key
admins:                 cyrus
hashimapspool:          no
allowanonymouslogin:    no
allowplaintext:         yes
unixhierarchysep:       yes
virtdomains:            yes
umask:                  000
quotawarn:              90
autocreatequota:        10000
reject8bit:             no
sendmail:               /usr/sbin/sendmail
postmaster:             postmaster
lmtpsocket:             /var/imap/socket/lmtp
sasl_pwcheck_method: auxprop
sasl_auxprop_plugin: sql
sasl_sql_engine: mysql
sasl_mech_list: LOGIN PLAIN
sasl_sql_user: mail
sasl_sql_passwd: secret
sasl_sql_database: mail
sasl_sql_hostnames: localhost
sasl_sql_select: SELECT password FROM accountuser WHERE username='%u@%r' 
or (username='%u' and domain_name='')
=========================>8========================================

select * from accountuser where username='cyrus';
+----------+----------------------+--------+---------------+
| username  | password                   | prefix    | domain_name  |
+----------+----------------------+--------+---------------+
| cyrus        | secret                         |              |        
                |
+----------+----------------------+--------+---------------+

---
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