Outlook | Windows | Classic Outlook for Windows | For home
Using Classic Outlook on Windows for personal email, calendar, and contact management
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Remote server returned '550 5.1.8 Access denied, bad outbound sender AS(42004)'
I can't send email.
Using Classic Outlook on Windows for personal email, calendar, and contact management
Hi. I'm Brian and I'll try to help.
Who is your mail provider - that is, what follows the @ in your address? What type of account (POP, IMAP, Exchange) have you configured? Was there ever a time when you were able to perform this function? Did anything change on your computer between then and now?