Mailing List Lotus Notes

Why can’t I send e-mail messages from outlook 2007 to contacts who use lotus notes software?
I always receive this message:
This report relates to a message you sent with the following header fields:
Message-id: <003001c7a84b$0c94f250$25bed6f0$%cortezavelar@telesal.net>
Date: Wed, 06 Jun 2007 08:57:46 -0600
From: Mauricio Cortez Avelar
To: Marta_Aurelia_Martinez@wvi.org
Subject: RE: SOLICITANDO APOYO PARA VISAS A CHINA CONT.
Your message cannot be delivered to the following recipients:
Recipient address: marta_aurelia_martinez@wvi.org
Reason: Rejection greeting returned by server.
Diagnostic code: smtp;554 Transaction Failed Listed in connection control deny list
Remote system: dns;mail.wvi.org (TCP|168.243.220.226|43651|63.110.18.82|25) (Transaction Failed Listed in connection control deny list)
There’s a glitch in the system. You might have to contact Microsoft to get your problem resolved.