The customer uses SBS 2003 as the server. His primary e-mail address is firstname.lastname@example.org, and that is an Exchange account hosted on his server. He also has a secondary e-mail address of email@example.com, and that is a POP3 account.
He needs to be able to pick between the two when creating a new message in Outlook, and he can indeed pick from the drop down list on the "Accounts" tab. But the problem is this: if he picks the peaches.com account, it still goes out as firstname.lastname@example.org. That's what the recipient sees. And if I go and look at his sent folder, it shows this: Joe Smith (Joe@peaches.com) on behalf of Joe Smith. So, there is SOME reference to his peaches account, but it's not right. In other words, his recipients should be seeing an e-mail from email@example.com like it used to do before we recently upgraded him to a new computer. (Both old and new ran XP and Outlook 2003.)
I have tried a few obvious things, such as deleting his firstname.lastname@example.org POP3 account in his Outlook 2003 on his computer and setting it back up. And, BTW, when I run the "Test Account Settings" in his Outlook, it DOES show up in his Outlook as coming from email@example.com like it's supposed to. But that's the only time I can get it to create an e-mail that says it's from firstname.lastname@example.org.
I also tried to delete the email@example.com Exchange account so I could re-do it, but I got an error, saying that I could not "delete the account containing your mail, contact and calendar. You wil first need to create a new location for your personal data." So, I gave up on this idea, afraid that I would make things worse.
I also checked the user's setup in SBS 2003, and I deleted the one reference to his peaches.com POP3 account in his "E-Mail Addresses" tab, but that did not help. I don't know why it was there in the first place, but it was, all during the time he was on his old computer--back when things were working fine.
So, I don't understand why I can't get it where it can send out mail from firstname.lastname@example.org. I don't understand why those are going out as email@example.com. What can I try? TIA