When replying to email, Apple Mail changing the sending email address. Why? How to prevent this?
I have multiple email address attached to my Apple mail account. The 'to' email address of the incoming mail is changed on the 'from' to the iCloud account (a default account created by apple that I never use) when replying. Then it fails and I have to manually change the 'from' email to the appropriate one which does work. Why is this happening? What can I do to avoid this problem? Is it a glitch or an unintended consequence of the apple code?
MacBook Pro 15″, OS X 10.11