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I have sent a mail to a group ID, but I'm getting the error "Delivery has failed to these recipients or groups: (one recipient's mail ID). The recipient's mailbox is full and can't accept messages now. Please try resending your message later, or contact the recipient directly". I cannot reach out to the recipient right now, but the mail I'm sending is urgent. If the entire group has a single ID, and one recipient's mailbox is full, does the mail not deliver to everyone in the group or just that single recipient?
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Using classic Outlook for Windows in business environments
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Only that one recipient. The message will be delivered to the others.
Your email server sends the email as seperate email to all receipents, why may have different email server on their side.
If one refuse one email, it has absoultly no effect on the others.