When sending forms using QuickBooks E-mail the sender or company's E-mail address is incorrect.
The E-mail address in the company file may be incorrect.
The E-mail address setup or assigned to the QuickBooks Desktop E-mail account may be incorrect.
Intuit recommends more than one solution for this problem. The first solution may solve your problem, or you may need to try all of them to resolve the issue. For best results, perform the solutions in the order shown.