[Serusers] Registeration failed

Hi friends, I have successfully installed SER with MySQL support on my linux machine (having public ip) and have added to users leo and mukesh. I have exported SIP_DOMAIN as # export SIP_DOMAIN=ims.myserver.com and added "export SIP_DOMAIN=ims.myserver.com" to /etc/profile as well First Problem --------------------------- If I try below... # /usr/local/sbin/serctl ping sip:mukesh@ims.myserver.com [1]+ Done cat <$path | filter_fl 500 Below is error log extracted from /var/log/messages Sep 15 10:37:30 oradb1 ser: 2(3911) ERROR: mk_proxy: could not resolve hostname: "ims.myserver.com" Sep 15 10:37:30 oradb1 ser: 2(3911) ERROR: uri2proxy: bad host name in URI <sip:mukesh@ims.myserver.com> Sep 15 10:37:30 oradb1 ser: 2(3911) ERROR: uri2sock: Can't create a dst proxy Sep 15 10:37:30 oradb1 ser: 2(3911) ERROR: get_hfblock: send_sock failed Sep 15 10:37:30 oradb1 ser: 2(3911) ERROR: fifo_uac_error: no mem for hf block ----------------------------- Second Problem -------------- How can I configure my Nokia6680 as UA (It has SIP support)? any kind of help/suggestion is highly appreciated. Regards Mukesh Kumar