Hello, I have a situation where I would like to have two different contacts send to the same external email address. This is a legacy issue but I was still interested in making it work. So what I am after is: ContactA --> externaluser@xxxxxxxxxxx ContactB --> externaluser@xxxxxxxxxxx If you set this up and attempt to send to either ContactA or ContactB you receive an NDR indicating that two recipients have the same address. My real question is that so long as that recipient is external to exchange why is this a problem and is there a way around it? I understand that this can't work for exchange recipients but for external ones I not sure why it should be a problem. Thanks Bill