how ya doin!

alright, down to business. I'm having an SMTP server problem (pretty big one) what's happening is my email server is not sending to secured hosts (i.e. comcast.net, yahoo.com). I recieved an email one time from comcast's servers saying that all comcast subscribers are no longer allowed to send smtp, blah blah blah, please forward all requests to smtp.comcast.net. so i think, easy fix... i create a domain in my server... make it a smart host... forward to smtp.comcast.net. fixed. now... when i try and use asp code configured with CDOSYS to send an email to yahoo.com (remember, i send fine to comcast.net because it's hardcoded) it gives me a god damn error on the .send method. now, my question... how do i fix this easily with out adding a smart host for every email company on the internet... btw i'm using mailenable (i gave up on trying to get microsoft's smtp server that came with win2k3 to work, pretty cool program, mailenable... recommend you give it a try... if this problem is fixable )

thanks for your help (again)

You can actually set iis to send outgoing smtp traffic on any port - could use 5252 - anything above 1024.
The convention for smtp is port 25, which comcast has started blocking for pc's on their network.
Port 2525 is an alternate port that is sometimes hardcoded into 3rd party programs, proxy servers, and firewalls as an alternative and is just easy to remember.

Comcast lets you use their smtp servers though, so you probably can just specify them unless you're using something like dns2go to have your own domain on a dynamic ip.

Hotmail, AOL, and Yahoo are all tightening up on their spam rules though. Expect to see more rejected email if your smtp server can't be mapped to a static ip associated with your domain name in dns spf records.