Some recipients can't send/recieve.

Why do you think that some recipients can not send or recieve email via our exchange server. Half of the 20 recipients can do both without a problem, whilst the other half generate blank NDR's. Therefore I have no way of knowing why. From what I can see there are correct addresses throughout our server. We use 5.5. We use SMTP and POP3 for retrieval via OWA.

Thanks in advance

Cracky141
cracky141Asked:
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vpgopikrishnanConnect With a Mentor Commented:
Check the internet connectivity
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cracky141Author Commented:
Yes, thats been done all TCP/IP and dns settings have been checked and tested and work fine.
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