Hi, I am trying to run The DNS service on the same ISA 2K4 machine. Though the DNS server is not being able to resolve, although temporarily I opened all access to the server itself via the firewall policy. Are there any steps/guides on how to do this please? regards, Robert Abela This mail was checked for malicious code and viruses by GFI MailSecurity. GFI MailSecurity provides email content checking, exploit detection, threats analysis and anti-virus for Exchange & SMTP servers. Viruses, Trojans, dangerous attachments and offensive content are removed automatically. Key features include: multiple virus engines; email content and attachment checking; an exploit shield; an HTML threats engine; a Trojan & Executable Scanner; and more. In addition to GFI MailSecurity, GFI also produces the GFI MailEssentials anti-spam software, the GFI FAXmaker fax server & GFI LANguard network security product ranges. For more information on our products, please visit http://www.gfi.com. This disclaimer was sent by GFI MailEssentials for Exchange/SMTP.