Error Sending to certain addresses

[nhidalgo]

I receive the follow error when tyring to send to certain email domains.

'test@windsorpress.com' on 1/15/2003 10:39 AM
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<redmail.mydomain.com#5.7.1 smtp;550 5.7.1 This system is configured to reject mail from MAILSERV [my ip address] (DNS reverse lookup failed)>

Is this an error on my side or the receipts server. I can telnet to their mail server on port 25 and get a connection. My public register mx record references redmail.mydomain.com as my mail server which resolves to my current ip, but the name of the mail server was renamed from &quot;redmail&quot; to Mailserv&quot;, could this be causeing a problem.

Nick

 

[jrmjh]

add a second MX record with a lower priority or reconfigure your current MX record to the correct host