I have two servers. One Exchange 2000 box running on Windows 2000 and a Linux box set up with QMail for SMTP.
Interesting problem. Because of the gepgraphic location of my company's offices, I am only able to get Comcast DSL. The problem is that the IP addresses that are randomly assigned to my Comcast account are usually blacklisted and many outgoing emails from my Exchange server aren't able to be delivered to AOL and other ISP addresses. I suppose they automatically blacklist IP's from ISP's - or someone has abused the IP I currently have in the past.
I'd like to relay all my outgoing mail from Exchange through my QMail box. My QMail box is off site, and I know it doesn't have these blacklisting problems.
Is it as simple as setting up a "smart host" on my "SMTP Connector" in Exchange to point to the QMail box? I know that I need to add my Exchange servers' hostname to the "rcpthosts" file in QMail first.
I have already tried relaying messages through my Comcast SMTP server (smtp.conmcast.net) without success. However, I am not clear if the problem is me or Comcast.
If anyone knows of a guide about this topic, or has personal experience, I would greatly appreciate the input.