We support two email domain names for two different company names within our environment. Both are supported by the same Exchange server. I have one user - in the accounting department - who uses both addresses. And this is my dilemma - she needs to be able to send and recieve emails from both addresses. The incoming was easy - I just configured both SMTP addresses for her and set up a rule that diverted any mail coming in addressed to her@2ndcompany.com to a specific folder. The problem is, she needs to be able to send out messages that will be seen at the recipient as either her@1stcompany.com, or her@2ndcompany.com so that if the user just clicks "reply" it will come in addressed appropriately so that it will end up in the correct folder. I know I can set one or the other address as "primary" in AD, and that is the address it will report, but for her benefit, she needs to be able to switch back and forth between them. Can this be done?