Hi all, How can i configure my ISA Server to allow NNTP. I have done the following config changes on the server. Even after doing the same, not able to connect, its giving me the error code 800ccc0e A. To enable clients to access news servers (Network News Transfer Protocol--NNTP), POP3, and SMTP, you need to create custom filters with the following details: NNTP--Custom, Both, Local Fixed Port 119, Remote Fixed Port 119 POP3--Custom, Both, Local Fixed Port 110, Remote Fixed Port 110 SMTP--Custom, Both, Local Fixed Port 25, Remote Fixed Port 25 For example, to create an NNTP filter, perform the following steps: Start the ISA Server administration tool (Start, Programs, Microsoft ISA Server, ISA Administration Tool). Expand Array, Server, Access Policy, IP Packet Filters. Click Create Packet Filter. Enter a packet filter name (e.g., NNTP Filter), and click Next. Select the server, and click Next. Select "Allow packet transmission," and click Next. Select a type of Custom, and click Next. Select IP protocol--TCP Direction--Both Local fixed port--119 Remote fixed port--119 Click Next. Select the IP address to apply the filter to, and click Next. Select "All remote computers" for "IP packet filter to apply to," and click Next. Click Finish. The above method is manually creating an IP packet filter to cater for the protocols however ISA can also dynamically create these if you instead create a Protocol Rule: Start the Internet Security and Acceleration Server administration tool (Start - Programs - Microsoft ISA Server - ISA Administration Tool) Expand the Array - Server - Access Policy - Protocol Rules Create a new protocol rule or open an existing one Select the Protocol tab Select the SMTP (client), NNTP and POP3 protocols Click OK This would be the preferred method and is easier. If you're running one of those services directly on your ISA server, then IP Packet Filters may have to be defined. Even after this, i'm not able to connect to the NNTP server. Can anyone pls help me out in configuring the same and i have attached the error which i get from the client computers when trying to connect to the nntp server. DISCLAIMER: This e-mail contains proprietary information some or all of which may be legally privileged. It is for the intended recipient only. If an addressing or transmission error has misdirected this e-mail, please notify the author by replying to this e-mail. If you are not the intended recipient, you must not use, save, disclose, distribute, copy, print or relay this e-mail.