IdunnOMemberFeb 09, 2008 at 2:48 am #130273
I hope someone can help me.
Untill recently I used to have a linux mailserver. I wanted to try and switch to a Windows server and with the help of the articles on Petri I created a Windows 2003 server with Exchange 2003. Both have all the SP’s and are configured with SSL OWA / RPC over HTTP.
It’s a single server inside a small domain behind an ADSL. Internally I have a local DNS and I have a domainname registered with all the DNS entries pointing to my modem/firewall.
After changing to Exchange, I couldn’t send to hotmail addresses for the well-known “local #5.5.0 smtp;550 DY-001 Mail rejected by Windows Live Hotmail for policy reasons. We generally do not accept email from dynamic IP’s as they are not typically used to deliver unauthenticated SMTP e-mail to an Internet mail server. “
My IP is also listed in the PBL of spamhaus. Searching on spamhaus told me I should have smtp authentication turned on and a reverse dns present.
I called my ISP and they told me they didn’t support RDNS. They “only provide the line”…. :x
The strangest thing though: while hosting on the linux server, I didn’t have any problems with sending to hotmail without a rdns entry.
So, my question is: is there a way to have exchange increase the smtp authentication / security in a way that the rdns entry isn’t needed???
:offtopic: I’m looking for ways to change ISP.. :mrgreen:
You must be logged in to reply to this topic.