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.
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?
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..