It is a violation of the contract law and is also suspected of infringement. It is a breach of contract for the courier company to confirm the receipt of the goods on its behalf without confirming whether the consigned goods have been delivered to the destination completely and safely. According to the "Service Specification for Express Service Industry", when delivering the express mail to the recipient, the express service personnel shall be obliged to inform the recipient to receive and send the express mail in person; If the recipient can't sign for it himself, he can communicate with the recipient (sender) and use the collection method after permission. The courier service personnel should also inform the collector of the collection responsibility; Unless otherwise agreed by the sender or the recipient, such agreement shall prevail. Without the authorization of the recipient, the courier can't let others sign for him. The courier company must find someone to sign for it. If the signer does not entrust others to sign on his behalf, he should contact the signer before signing. The signer needs to show his ID card and keep a copy for inspection. In the process of delivery by the courier company, the courier bill is equivalent to the contract between the sender, the recipient and the sender. It is a violation of contract law and also suspected of infringement to indicate the company's signature where the recipient should sign. Moreover, it is a breach of contract for the courier company to confirm the receipt of the goods on its behalf without confirming whether the consigned goods have been delivered to the destination completely and safely. The courier company sends the mail by itself and signs for it by itself, indicating that the recipient has not received the courier. When there is a problem with the courier, you can sue the courier company.