Exchange will recieve mail but won't send until...

I have this issue with an SBS 2008 server with Exchange 2007. Incoming mail works fine with no problems but outgoing mail get stuck in queue. The weird thing is if I open server manager and click on hub transport immediately mail will start flowing through.
I do have an issue with
http://blogs.msdn.com/b/keithmg/archive/2009/01/06/exchange-topology-discovery-failed-error-0x80040a02-dsc-e-no-suitable-cdc.aspx  but I have a problem. Permissions were not the fix. When I enable IPv6 outgoing mail stop immediately and the mail troubleshooter
says the server is not compatible with IPv6.
So here I am stuck. :(
Edit:I have disabled IPv6 in the router

The weird thing is if I open server manager and click on hub transport immediately mail will start flowing through.
I do have an issue with
http://blogs.msdn.com/b/keithmg/archive/2009/01/06/exchange-topology-discovery-failed-error-0x80040a02-dsc-e-no-suitable-cdc.aspx  but I have a problem. Permissions were not the fix. When I enable IPv6 outgoing mail stop immediately and the mail troubleshooter
says the server is not compatible with IPv6.
Hi,
According to your description,I'm very confused.
What did you do when the mail get stuck?Open server manager on hub transport server or EMC ?
What's your problem now? a mail flow issue or a permission issue?
Please give us more details.
Thanks.
Niko Cheng
TechNet Community Support

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