I need to make sure not to change any brand names. So Postfix, Sendmail, Exim, OpenSMTPD, OpenBSD stay the same. Let's process each sentence carefully.
Revised by user example: Verify the network router’s content inspection policies, ensure that the message body is not suspicious, and verify that the targeted mail system is not inhibiting correspondence flow. mta sa linux
Another example: "Use user verification to prevent unauthorized users from sending emails." I need to make sure not to change any brand names