Slackware 15.0: Moderate Update for Postfix SMTP Issue SSA:2024-022-01

Here are the details from the Slackware 15.0 ChangeLog: patches/packages/postfix-3.6.14-i586-1_slack15.0.txz: Upgraded. Security (inbound SMTP smuggling): with "smtpd_forbid_bare_newline = normalize" (default "no" for Postfix < 3.9), the Postfix SMTP server requires the standard End-of-DATA sequence ., and otherwise allows command or message content lines ending in the non-standard , processing them as if the client sent the standard . The alternative setting, "smtpd_forbid_bare_newline = reject" will reject any command or message that contains a bare , and is more likely to cause problems with legitimate clients. For backwards compatibility, local clients are excluded by default with "smtpd_forbid_bare_newline_exclusions = $mynetworks". For more information, see: https://www.postfix.org/smtp-smuggling.html (* Security fix *)