We have a client who is unable to send us email that is through our domain hosted at westhost. Here is the error they get:
Your message did not reach some or all of the intended recipients.
Subject: Order Total
Sent: 2/23/2012 8:19 AM
The following recipient(s) cannot be reached:
firstname.lastname@example.org on 2/23/2012 8:19 AM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<mail.acecanada.net #5.7.1 smtp;554 5.7.1 Blocked for SPAM: 126.96.36.199 found in dul.dnsbl.sorbs.net (see http://en.wikipedia.org/wiki/DNSBL?ign=188.8.131.52)>