This is a bit of a long winded question but i'll simplify it as much as possibe.
The problem is that all of a sudden our webserver has stopped sending (CDO generated) outgoing emails and if you look at the queue it says that "Unable to Bind to the DNS server".
See this image:
This happens for ALL of the outgoing items in the queue.
Our webserver was prevously used as a POP3 accessed exchange server. Since then we have left exchange server on the machine as it seems to give greater control over SMTP.
We have SMTP locked down so that only the machine ITSELF can use it (as we had issues with an open relay before).
This configuration has worked for over a year now.
No configurations have been changed recently.
DNS stuff is working on that machine... (if i open internet explorer and type a site name it will resolve that address)
No code has been changed for the ASP pages using CDO to send emails.
I have tried restarting exchange.
I have tried restarting SMTP service.
I have tried restarting IIS.
All of the above refresh the queue, but it still ends up at the same situation.
Please help ASAP.