Hmmm- mail relay is a basic function of most ISP and Web hosting services.
Big picture- your DNS name space and map too IP (range) for your SMTP gateway must be listed in or accessible (resolvable) via Global DNS. This allows for the relay downstream toward your exchange server (assuming Microsoft). It all pretty much starts with where your MX (Mail Exchanger) transmit and receive records are pointed and what if any weights are applied in your DNS entries. I have studied this process and actually in the past have had to do a little design work here, but shy of breaking-out the books this is all I can seem to recall @ the moment. Topics for research would be DNS & BIND (specifically MX records), Send Mail, and Exchange (specifically where traffic is received). Sorry if this may be too vague Phil -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Monday, May 27, 2002 12:40 PM To: [EMAIL PROTECTED] Subject: Mail Relay [7:45144] Can anyone tell me what is a mail relay for ?? I know it is not a Cisco issue, but for me it is related to the fact that I am only studying cisco stuff and therefore do not know anything about those kind of Microsoft things. Regards. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=45298&t=45144 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]

