Hi Martin, I have 2 users A and B registered to 2 domains domainA and domainB. When A calls B@domainB, DNS lookup is happening. Also I have routing logic logic in ser.cfg which is, if(method == INVITE && uri=~*@domainB) { forward(192.168.2.105,5060) } I have another proxy running here. I want all the calls to be forwarded to the proxy in 192.168.2.105 and then to the sip server at domainB. DNS lookup should not happen at all. What I want is when A calls B@domainB, it should use the logic in ser.cfg. And if I call B as B(a)192.168.2.105, calls are going thru. Problem is when I use the domain name. Hope my question is clear this time. Regards, Geethanjali -----Original Message----- From: Martin Hoffmann [mailto:hn@nvnc.de] Sent: Friday, March 28, 2008 10:52 PM To: Geethanjali CS (WT01 - TAS-HORIZONTAL) Cc: serusers(a)lists.iptel.org Subject: Re: [Serusers] help required disabling DNS lookup geethanjali.csg(a)wipro.com wrote: lookup. be Could you be a bit more specific what you mean by "forward logic"? If you use domain names as your forwarding destinations, SER will do DNS querries to resolve those names into IP addresses. The only way to circumvent that is to use IP addresses as forwarding destinations. Regards, Martin The information contained in this electronic message and any attachments to this message are intended for the exclusive use of the addressee(s) and may contain proprietary, confidential or privileged information. If you are not the intended recipient, you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately and destroy all copies of this message and any attachments. WARNING: Computer viruses can be transmitted via email. The recipient should check this email and any attachments for the presence of viruses. The company accepts no liability for any damage caused by any virus transmitted by this email. www.wipro.com