Hi, We want to send bulk mails using group mail software. But when we test the software through our mail server, mails goes fine. But when we try to send it by using our ISP's DNS IP, it says MX record can not be found. But exchange server is sending mails to a third party software called Argosoft which is sending mail using ISP's DNS IP configured on ISA Server. If we send it without ISA server 2004, it works fine. Please help. ps. check out our latest product: www.DriveInside.com - India's No. 1 Auto Website -------- Amit Kapoor Network Engineer Module One India Ltd. Paharpur Software Technology Incubator Park A-88, Okhla Phase II, New Delhi 110020, India Tel: +91-(0)11-41859200 ext. 204 | Fax: +91-(0)11-41859220 E-mail: <mailto:amit@xxxxxxxxxxxxx> amit@xxxxxxxxxxxxx | Web: <http://www.moduleone.com/> www.moduleone.com ==== c r e a t i v e i n t e r n e t s o l u t i o n s ==== Module One, one of India's leading Interactive agencies, uses a combination of creative, marketing and technology skills to assist clients in successfully using the Internet for their marketing initiatives.