troubleshooting Question

Authentication problem using Smarthost in Exchange 2010

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Randy_R asked on
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28 Comments2 Solutions192 ViewsLast Modified:
I use smtp.nyc.rrr.com as my smarthouse in Exhange 2010.  This works fine with no authentication as long as I am connected to the Time Warner Roadrunner network (my ISP).  However, from time to time TWC goes down and I have a dual WAN router with Verizon DSL set up as a failover ISP.

When this happens, TWC RR smtp servers will not relay my outgoing mail.  I input my TWC RR email and password to authenticate but my outgoing mail is still rejected.  I get the following error message:

The following organization rejected your message: dnvrco-oedge03.
junk@rackson.com
dnvrco-oedge03 #554 From address must match authentication [R0107004] ##

I also have a yahoo bixzmail account (smtp.bizmail.yahoo.com) but I can;'t seem to get that to work on either the TWC ISP connection or the Verizon DSL connection.

Can anyone help me?

thanks.

UPDATE:  I think the problem may be that the "from" address on my mail leaving exchange is NOT the email address assigned to me by TWC RR..
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