Problem sending email to one person (error enclosed)

I used to have a problem with one of my domains receiving email from someone because the MX was set to an IP. Instead, we pointed it to a hostname and set that hostname to the IP. It solved the problem. Now I can receive email from that person, however, when I try to SEND email to that person, I get this response back:

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Your message did not reach some or all of the intended recipients.

Subject: RE: hello

Sent: 2/25/2004 12:34 PM

The following recipient(s) could not be reached:

'meg@geemissler.com' on 2/25/2004 12:35 PM

Unable to deliver the message due to a communications failure

The MTS-ID of the original message is: c=US;a= ;p=Karn Sitkins Pay;l=WYANDOTTE-040225173401Z-1491

MSEXCH:IMS:Karn Sitkins Payette:KSP:WYANDOTTE 3902 (000B09B6) Host Unknown

 

 

 

 

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