Hello,

I'm very new to IIS mail services. I have set up my POP3 server to use
an encrypted password file, because I'm hosting multiple domains and I
don't want to create a Windows user for each mailbox.

My problem now is, how do I authenticate the users to send outbound mail
using this server? I read somewhere about having to use IP or domain
based authentication, but I'm not sure how to do this.

I had thought of creating a single windows user account for each domain
for email sending, but I think it's messy.

I am using IIS 6 on Server 2003 Standard. No exchange, just POP3 and SMTP.

Any advice would be appreciated.

Rich C.