Hi, I have resolved all the configuration file issues.Now after running for some time it is giving this.Main error is in red. [root@JUPITER openser-1.2.1-notls]# ./openser -c 0(14118) WARNING: fix_socket_list: could not rev. resolve 172.16.0.2 0(14118) WARNING: fix_socket_list: could not rev. resolve 172.16.0.2 Listening on udp: 127.0.0.1 [127.0.0.1]:5065 udp: 172.28.7.17 [172.28.7.17]:5065 udp: 172.16.0.2 [172.16.0.2]:5065 tcp: 127.0.0.1 [127.0.0.1]:5065 tcp: 172.28.7.17 [172.28.7.17]:5065 tcp: 172.16.0.2 [172.16.0.2]:5065 Aliases: tcp: open-ims.test:5065 tcp: localhost:5065 tcp: localhost.localdomain:5065 tcp: JUPITER:5065 udp: open-ims.test:5065 udp: localhost:5065 udp: localhost.localdomain:5065 udp: JUPITER:5065 config file ok, exiting... 0(14118) INFO:mi_fifo:mi_destroy:memory for the child's mi_fifo_pid was not allocated -> nothing to destroy When i tried to run this from /etc/openser.init it is giving this. [root@JUPITER etc]# ./openser.init start -c Command Monit to start OpenSER... ./openser.init: line 64: /usr/local/bin/monit: No such file or directory Thanks in advance for all your help. Regards Vishwadeepak I wanted to set presence server.so i modified to the config file which is given on this link. http://uctimsclient.berlios.de/openser.cfg this is the conf file that i am using. I used -c option and solved the config file errors.I was not including the presence module while compiling. but 1 error is still coming wen i tried to run the openserver which is as follows- 0(6112) set_mod_param_regex: parameter <lock_set_size> not found in module <presence> 0(6112) parse error (93,19-20): Can't set module parameter ERROR: bad config file (1 errors) 0(6112) INFO:mi_fifo:mi_destroy:memory for the child's mi_fifo_pid was not allocated -> nothing to destroy can someone help? Andreas Heise &lt;aheise(a)gmx.de&gt; Sent by: users-bounces(a)openser.org 06/30/2007 02:17 AM To Vishwadeepak Agarwal &lt;Vishwadeepak.Agarwal(a)lntinfotech.com&gt; cc users(a)openser.org Subject Re: [OpenSER-Users] not able to run openser try *openser -C* to check which config lines are bad Vishwadeepak Agarwal schrieb: _______________________________________________ Users mailing list Users(a)openser.org http://openser.org/cgi-bin/mailman/listinfo/users ______________________________________________________________________ ______________________________________________________________________