542 This account isn't allowed to receive email
542 This account isnt allowed to receive email 退信原因: 由于收件地址限制,您无权给此帐号发信 建议改善措施: 请通知此帐号收件人联系其邮箱管理员，确认授权后再重新投递。
542 This account isn't allowed to receive email
退信原因:由于收件地址限制,您无权给此帐号发信
建议改善措施:
请通知此帐号收件人联系其邮箱管理员，确认授权后再重新投递。
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552 5.7.0 content and attachment content guidelines
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550 Mail content denied/550 Mailbox not found/550 No such us
