/usr/share/postfix/main.cf.dist contains a typo in a commented-out example line:

    #inet_protocools = ipv4

The correct parameter name is "inet_protocols". Users who uncomment this
line to restrict Postfix to IPv4 will inherit the typo, which Postfix
then reports as an unused parameter warning on reload/restart:

    warning: /etc/postfix/main.cf: unused parameter: inet_protocools=ipv4

The correctly-spelled default line below it (inet_protocols = all) remains
in effect instead, so the intended IPv4-only restriction silently has no
effect.

We believe that the bug you reported is fixed in the latest version of
postfix, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1144900@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Michael Tokarev <mjt@tls.msk.ru> (supplier of updated postfix package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Tue, 08 Sep 2026 16:32:25 +0300
Source: postfix
Architecture: source
Version: 3.11.7-1
Distribution: unstable
Urgency: medium
Maintainer: Debian Postfix Team <team+postfix@tracker.debian.org>
Changed-By: Michael Tokarev <mjt@tls.msk.ru>
Closes: 1144900
Changes:
 postfix (3.11.7-1) unstable; urgency=medium
 .
   * new upstream stable/security release,
https://www.postfix.org/announcements/postfix-3.11.7.html
   * debian-defaults.patch: fix typo (inet_protocools) (Closes: #1144900)
   * d/control: drop redundant postfix:Replaces postfix-lmdb
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Files:
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