I'm running an vsmtp service on iis5 and am having a little issue with mail 
delivery.

I can send identical emails to an address, one works one bounces back with 5
50 relaying denied(not too important). From what I can see the service is re
solving the mx to an internal host when the 550 occurs. whereas the other ti
me the mx resolves correctly.

Has anyone ever seen this before and have an answer?

James

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