I cannot send email messages to my client who has a prodigy.net address. I get the following message after sending the email: Your message did not reach some or all of the intended recipients.
Subject: Test Message
Sent: 6/23/2008 2:39 PM
The following recipient(s) could not be reached:
Tony Miranda on 6/23/2008 2:38 PM
The message cannot be delivered due to a configuration error on the server. Please contact your Administrator.
<graystone.pro #5.3.0 smtp;553 5.3.0 flpi132 - m5NJbuog007705, DNSBL:521< 18.104.22.168 >_is_blocked.__For_informa
I am using Outlook 2003 and Microsoft Small Business Server 2003. My ISP is ATT. Our domain graystone.pro is hosted by 1&1. I connect to the POP3 accounts there and route them through Exchange.