[多选] You are the network administrator of a medium-sized company， and users are complaining that they cannot send emails to some organizations. During your troubleshooting， you notice that your DNS MX record is blacklisted by several public blacklist filters. After clearing these listings for your IP address， and assuming that your email server has the right virus protection in place， what are two possible solutions to prevent this from happening in the future？（）

A . Change your Internet provider.
B . Change your public IP address.
C . Allow the email server to send traffic only to TCP port 25.
D . Put your email server in a DMZ.
E . Use a separate public IP address for your email server only.

下列哪个不属于人本文化（）企业留人。企业即人。企业为人。企业靠人。教育法律规范的结构通常包括假定、（）、奖惩三部分。裁定。审批。处理。实施。一般认为外源DNA常在刚刚完成复制或正在进行复制的染色体区整合。儿童的基本权利是（）、（）、（）和（）。确认 You are the network administrator of a medium-sized company， and users are complaining that they cannot send emails to some organizations. During your troubleshooting， you notice that your DNS MX record is blacklisted by several public blacklist filters. After clearing these listings for your IP address， and assuming that your email server has the right virus protection in place， what are two possible solutions to prevent this from happening in the future？（）

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