This is a critical request for help.... All 6 lines are out again today. I am forwarding inbound calls to a land lines but no one can make any outbound calls. Thanks for any suggestions. DDos Attacks have targeted Callcentric again, their instructions to me are for Asterisk not FreeSwitch (their info page for FreeSwitch does not help). I already researched the web for a week with no success. It may be buried in the wiki but I have not been able to find it. The parms they sent are below, can someone tell me what FreeSwitch equivalents are so I can get let them know it's right and possibly get back up? Mario G We have discovered new information for Asterisk users. In order to get DNS SRV working properly you will need to set the following in your /etc/asterisk/dnsmgr.conf file: [general] enable=yes refreshinterval=3600 And for your Callcentric trunk: [callcentric] srvlookup = yes domain = callcentric.com host = callcentric.com outboundproxy = callcentric.com register => 1234MYCCID:SUPERSECRET@callcentric.com Besides user and password all I have is: <param name="realm" value="callcentric.com"/> <param name="proxy" value="callcentric.com"/> <param name="outbound-proxy" value="callcentric.com"/> They suggested changing 2 lines but then I get the error below: <param name="proxy" value="srv.callcentric.com"/> <param name="outbound-proxy" value="srv.callcentric.com"/> ERR] sofia_reg.c:2039 userid Registration Failed with status DNS Error [503]. failure #82