求翻译：OIT内中央反垃圾邮件服务,可以在“白名单”(自动接受所有邮件)和“黑名单”(自动拒绝所有邮件)特定发件人发送的电子邮件地址、域(此地址的一部分在@符号)或主机(一个特定的机器地址发送)。是什么意思？

the oit within the central anti-spam services, can automatically reject all mail in the "white list" (automatically accept all mail) and the "blacklist" () a particular sender's e-mail address, domain (address part of the @ symbol ) or host (send a specific machine address).

In OIT%