I have an custom application being built that will use a exchange 2010 mailbox/email address. I have the mailbox created.
How do I set this up so that this mailbox can send emails from this app to internal network users, these users are all ready in Exchange.
I gave Send As, and Full access to the user who is building the app and will send the email from the app.
When the app send s the email we get the following error: The request failed. The remote server returned an error: (401) Unauthoized
How to fix this?