problem sending emails from Exchange on SBS 2003

Hi, I am having problems sending email from SBS 2003 using Exchange 2003.

I am getting the following message when try to send email:

The following recipient(s) could not be reached:

There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
<mail.domain-name.net #5.5.0 smtp;550-5.7.1 [xxx.x.xxx.xx] The IP you're using to send mail is not authorized to>

The IP address is Static,

Or anyone knows how to configure to MS Exchange 2003 to send email via ISP smtp server??

Thanks for help.


rkanabusAsked:
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Glen KnightConnect With a Mentor Commented:
In System Manager under connectors create a new SMTP connector and set it to use a smarthost.  This will be your ISP's smarthost.

You could also try and resolve the issue you have by following these instructions:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/A_2427-Problems-sending-mail-to-one-or-more-external-domains.html
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Glen KnightConnect With a Mentor Commented:
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rkanabusAuthor Commented:
Super, thanks it works fine now!

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Mohammad Ishtyaq KhatriCommented:
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