I am running SBS Server 2003
While replaying to a message that I received I get this error message.
I can send/receive messages from other people and different domains, but some of them I am unable send to or receive. I am pulling my hair over this one. The server has been running fine for past 12 months, this problem happened recently in last 4 weeks.
The following recipient(s) could not be reached:
email@example.com on 2/11/2006 1:28 AM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<server.ETCTransport.local #5.5.0 smtp;550 <CPE000f66a57076-CM001225701446.cpe.net.cable.rogers.com[188.8.131.52]>: Client host rejected: CABLE HS R#2>