We created an account and set up Outlook. We then imported the old emails from a PST file into outlook.
We can reply to emails there (generally, although some fail for another reason) however when the email is uploaded to the server the email addresses are gone, so when you try to reply it says the email address is invalid. When you then click on the contact in the email the email address field is blank.
So whilst the original imported email in Outlook is fine, if you then download the emails from server into another outlook profile it downloads the emails with no reply address. Also fails in OWA
This is obviously rather serious as they cant reply to any old emails ?
Any ideas?