Skip to content
ATO Pathways
Log In
Overview
Search
Catalogs
SCAP
OSCAL
Catalogs
Profiles
Documents
References
Knowledge Base
Platform Documentation
Compliance Dictionary
Platform Changelog
About
Catalogs
XCCDF
Guide to the Secure Configuration of Red Hat Enterprise Linux 8
Services
Mail Server Software
Ensure Mail Transfer Agent is not Listening on any non-loopback Address
Ensure Mail Transfer Agent is not Listening on any non-loopback Address
An XCCDF Rule
Details
Profiles
Prose
Ensure Mail Transfer Agent is not Listening on any non-loopback Address
Medium Severity
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.