Ensure Mail Transfer Agent is not Listening on any non-loopback Address
이 페이지는 아직 영어로 제공되지 않습니다. 번역 작업 중입니다.
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언제든지 연락주시기 바랍니다.Description
Mail Transfer Agents (MTA), such as sendmail and Postfix, are used to
listen for incoming mail and transfer the messages to the appropriate
user or mail server. If the system is not intended to be a mail server,
it is recommended that the MTA be configured to only process local mail.
Rationale
The software for all Mail Transfer Agents is complex and most have a
long history of security issues. While it is important to ensure that
the system can process local mail messages, it is not necessary to have
the MTA’s daemon listening on a port unless the server is intended to
be a mail server that receives and processes mail from other systems.
