由于某种原因无法投递给收件人的邮件 ,称为无法投递邮件。一般有以下几种情况 :收件人的地址书写不清或有误 ;原书地址查无此人 ;收件人迁移新址不明 ;收件人是已经撤销的单位 ,又无合法的代收单位 ;收件人死亡 ,又无家属代收 ;收件人拒收邮件或拒付应付的费用 ;局内投交的邮 For some reason can not be delivered to the recipient of the message, called can not deliver mail. There are generally the following situations: the recipient’s address is not clear or written; the address of the original book is no such person; recipient relocation of new address is unknown; the recipient is the unit has been revoked, there is no legal collection unit ; The recipient died, but also no collection on behalf of the family; recipient rejects the mail or refuses to pay the fees payable;