Exchange Server 2003

I have some people in our company not able to receive outside email.  We changed websites last week so that might have something to do with it but it has not affected everyone.  This is the message I get back from email I attempted to send.

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.7.1 recipient <someone@somewhere.com> unknown #292 (k98A4A228980290900) (state 14).



Any help would be appreciated
EABODAsked:
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BertlingConnect With a Mentor Commented:
have you any spam filter by any chance also?
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Andres PeralesCommented:
Not sure I understand the question completely when you mean you changed websites do you mean you added a domain name or you changed you domain name, meaning @somename.com?
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flyingskyCommented:
"We changed websites last week" can you post more detail about this?
also make sure recipient policy is configured correctly
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EABODAuthor Commented:
We changed our website host provider and also where we park our DNS
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flyingskyCommented:
Do you have more than one MX record?
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Andres PeralesCommented:
just the dns for your webserver or all of your DNS
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EABODAuthor Commented:
Thanks guys our spam filtering service didn't sync our mailer table IP and recipient checking IP.  I appreciate all the help
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