Some mail not been sent on E2k3 to Hotmail, Yahoo & others showing as queued, but most Ok

On Exchange 2003 there are a few domains where emails are not going at all. This has been happening for about a week now. In message tracking each one that is failing shows "Message Routed and Queued for Remote Delivery" but does not go. Mail is sent out direct and DNS entries are correct in exchange.

Help would be appreciated.
Thanks,
Andrew.
andrew_2706Asked:
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poweruser32Commented:
you need to make sure your dns configuration for you domain is correct and that you have reverse dns set up for your domain
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andrew_2706Author Commented:
DNS fwd&rev seems to be set up ok. can't understand why some mail goes out of the queuing mail list but yet doesnt actually go anywhere because it thinks its queued for remote delivery i assume?

Mystery!
Doesnt help that I am having to work on this whilst on holiday in Spain using a laptop and mobile phone connection on a VPN (dead slow!)

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SembeeCommented:
The first thing I would do is put the domain in to dnsreport.com and see whether it throws back any errors.

Simon.
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andrew_2706Author Commented:
Checked hotmail and yahoo accounts that were failing in dnsreport to no avail. I'm going to have to have a closer look at it when I return from my holidays next week. Thanks all.
Andrew.
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