Hi All I have two mail servers External and Internal External mail Server ? xyz.com Internal mail Server ? in.xyz.com I have successfully published my OWA i.e. My internal mail server -in.xyz.com I am able to browse the OWA from outside say for example my URL is mail.in.xyz.com It is working fine; I am only able to send mails from and to xyz.com and in.xyz.com domains i.e. from external and internal mail server I am not able to send mails to outside domains i.e. others neither domains nor I am nor if I send mails from hotmail or yahoo am I not able to receive the mails I do not know where I went wrong I did as per my the documents given Please guide in this and help me in this regard so that I can send mails to all domains Regards Sabeer