Undeliverable Emails - SMTP Communication Problem - domain does not designate IP as permitted sender

I am having problem sending email to one domain (bandwidth.com) and not to sure if there is anything else I can try.  I have a Static IP and hosting Exchange in house off a SBS 2003 server.  Trying to reply to a guy at bandwidth.com leaves me with:

"The following recipient(s) cannot be reached:

      person@bandwidth.com on 6/10/2008 9:58 AM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <domain.com #5.5.0 smtp;550 domain of dan@domain.com does not designate STATIC IP as permitted sender>

When I try to do a SMTP Connector to go out through our ISP

The following recipient(s) cannot be reached:

      person@bandwidth.com on 6/10/2008 9:57 AM
            The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            <mta4.srv.hcvlny.cv.net (tcp-daemon) #5.0.0 smtp;550 domain of dan@domain.com does not designate 167.206.4.199 as permitted sender>

Anything I can do for that?
Fluid_ImageryAsked:
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Computer101Connect With a Mentor Commented:
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Computer101
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robrandonCommented:
I would give your contact a call and let him know.  Sounds like they have to white-list your domain.
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Fluid_ImageryAuthor Commented:
Thats what I thought.  Figured I would see if any other things I could do on my side.
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Scott GorcesterCTOCommented:
Fluid_Imagery,

Did you get this issue resolved?  I have the same problem with one of my customers and am wondering if it was you were just on a black-list as 'robrandon' suggested.  I've checked numerous blacklists and am not listed on any.
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robrandonCommented:
moosesupport - you don't have to be on a public blacklist for a spam filter to stop your emails.  It could be something specific to the recipients filter that is stopping your messages, which is why I suggested contacting the recipient and having them modify their configuration to white list the sending domain.

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Scott GorcesterCTOCommented:
Ah, yes...that makes sense.  I'll see if I can contact anyone on the recipients side to see if they can help.  
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Fluid_ImageryAuthor Commented:
yeah we had to setup a SPF record =)
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Scott GorcesterCTOCommented:
Thats a good idea...i should do that.  Thanks for both of your help.
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