I've an SBS 2003 server hosting a few domains, for example domain1.co.uk, domain2.co.uk and domain3.co.uk. Domain1 is the primary domain for SBS, domain2 and domain3 are primary to different users. Over the past few days I'm experiencing issues sending emails to MSN.COM addresses, please refer to the detail below, some parts altered for obvious reasons.
Your message did not reach some or all of the intended recipients.
Sent: 30/01/2008 22:54
The following recipient(s) cannot be reached:
firstname.lastname@example.org on 30/01/2008 22:54
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<domain1.co.uk #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. http://www.spamhaus.org
maintains lists of dynamic and residential IP addresses. If you are not an email/network admin please contact your E-mail/Internet Service Provider for help. Email/network admins, please visit http://postmaster.live.com
for email delivery information and support>
Any idea's for 500 points, urgently required :-)