I am on a Rackshack Raq4i and everything is working great except for one thing. I can't seem to get my server to sending mail to any external address from a pop account or a PHP script. I have tried it from 3 different virtual accounts of which 2 of them are using the local Raq name servers. All of the accounts can rx email (internal and external). I can send mail within my server between account but I get the following undeliverable message from outlook.

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

Subject: curt@hostingdirect.net
Sent: 08/20/2001 4:37 PM

The following recipient(s) could not be reached:

'curt@hostingdirect.net' on 08/20/2001 4:38 PM
No transport provider was available for delivery to this recipient.
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Related to messages being sent out by my PHP script I see in my /var/spool/mail/admin file it looks like I am getting a name server timeout but I am not sure why?

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----- The following addresses had transient non-fatal errors -----
curt@hostingdirect.net

----- Transcript of session follows -----
451 curt@hostingdirect.net... hostingdirect.net: Name server timeout
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old
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Any Ideas are appreciated!