Intermittent Emails

[sharkbyte6171]

I have an exchange 2003 server setup to send and receive emails both internally and externally.

The setup is working for the most part except intermittently I get this error message.

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

Subject: SMTP
Sent: 7/25/2006 12:49 PM

The following recipient(s) could not be reached:

'name@domain.com' on 7/25/2006 12:49 PM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<server.domain.local #5.5.0 smtp;553 sorry, relaying denied from your location [xxx.xxx.xxx.xxx] (#5.7.1)>

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I had this same error before, during configuration, but was remedied by adding the external DNS server addresses under the Delivery tab advanced settings.

Now I can send one mail and receive it, then receive this error on a second send, ten minutes later it will work again.

Anyone have any suggestions?

 

[sharkbyte6171]

Let me be more basic, I sent 7 emails to a specifice address someone@domain.com subject was test1 - test7.

every other one made it to the destination and the rest gave me the error above.