I have an exchange 2000 server running on the DC. The ISA server is configured as a member server. I am using a standard modem to connect to the ISP. I have configure the ISA server with IIS SMTP virtual server to send the mail through. Mail is sent through this connection but incoming mail is not received without issuing a manual ETRN command from the Exchange server. I have disabled access control on the ISA in order to facilitate this. Can anyone let me know how it needs to be configured for automatic mail retrieval. Regards, Matthew