根据以往的作法,对信箱开出的欠资邮件,首先是加贴改退批条退回寄件人,由寄件人补足邮资后再寄。对未留寄件人名址的,才加盖“欠资”邮戳,由收件人双倍补交邮资。但2001年3月1日起实行的新《国内邮件处理规则》,对这一做法进行了改动。 According to past practices, out of mail on the mailbox, the first is to affix the approval of the withdrawal back to the sender, make up the postage by the sender and then send. The name of the sender did not leave the site, only stamped “owed” postmark, doubled by the recipient to pay the postage. However, the new Domestic Mail Handling Rules, which came into force on March 1, 2001, has been changed.