Debian Bug report logs - #991950
postfix.postinst fails if /e/resolv.conf contains `search .`

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Paride Legovini <paride@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: postfix.postinst fails if /e/resolv.conf contains `search .`

Date: Fri, 06 Aug 2021 16:46:50 +0200

Source: postfix
Version: postinst fails if /e/resolv.conf search domain starts with a "."
Severity: normal
X-Debbugs-Cc: paride@debian.org

Dear Postfix maintainers,

When the /etc/resolv.conf search domain considered by postfix.postinst
to configure postfix as an "Internet site" (the default debconf option),
e.g.:

  search .example.com

the installation fails with:


Running newaliases
newaliases: warning: valid_hostname: misplaced delimiter: debian-sid..example.com
newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: debian-sid..example.com
dpkg: error processing package postfix (--configure):
 installed postfix package post-installation script subprocess returned error exit status 75
Processing triggers for man-db (2.9.4-2) ...
Errors were encountered while processing:
 postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)


Note the double dot in "debian-sid..example.com". Having domain start
with a dot is not explicitly mentioned by resolv.conf(5), but the syntax
is accepted by the glibc resolver, see:

https://sourceware.org/git/?p=glibc.git;a=blob;f=resolv/res_query.c;h=ebbe5a6a4ed86abe3fccd4a134bfcf6f613c9bbb;hb=HEAD#l385

(thanks sergiodj@d.o for digging this up).

The postfix.postinst file should tolerate those domains and strip off
leading dots, as the glibc resolver does:

https://sourceware.org/git/?p=glibc.git;a=blob;f=resolv/res_query.c;h=ebbe5a6a4ed86abe3fccd4a134bfcf6f613c9bbb;hb=HEAD#l411

The above was verified on an up-to-date Sid system with postfix 3.5.6-1+b1.

Paride

Message #10 received at 991950@bugs.debian.org (full text, mbox, reply):

From: Paride Legovini <paride@debian.org>

To: 991950@bugs.debian.org

Subject: Re: postfix.postinst fails if /e/resolv.conf contains `search .`

Date: Fri, 6 Aug 2021 17:49:12 +0200

Control: tags -1 + patch

I submitted this MP with a fix:

https://salsa.debian.org/postfix-team/postfix-dev/-/merge_requests/12

Cheers!

Paride

Message #23 received at 991950-close@bugs.debian.org (full text, mbox, reply):

From: Debian FTP Masters <ftpmaster@ftp-master.debian.org>

To: 991950-close@bugs.debian.org

Subject: Bug#991950: fixed in postfix 3.6.3-2

Date: Thu, 23 Dec 2021 06:03:28 +0000

Source: postfix
Source-Version: 3.6.3-2
Done: Scott Kitterman <scott@kitterman.com>

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 991950@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Scott Kitterman <scott@kitterman.com> (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)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Thu, 23 Dec 2021 00:18:30 -0500
Source: postfix
Architecture: source
Version: 3.6.3-2
Distribution: unstable
Urgency: medium
Maintainer: LaMont Jones <lamont@debian.org>
Changed-By: Scott Kitterman <scott@kitterman.com>
Closes: 905653 968516 991513 991950 995031 995129 999867
Changes:
 postfix (3.6.3-2) unstable; urgency=medium
 .
   [Scott Kitterman]
 .
   * Add postfix-mta-sts-resolver to suggests.  Closes: #968516
   * Include compatibility_level in addition to postifx version when
     determining default value for chroot in master.cf.  Closes: #995129
   * Fixup errors in postifx-add-* man pages.  Closes: #995031
   * Set compatibility level to 3.6 for fresh installs
   * Update main/master.cf.proto on upgrade if not modified.  Closes: #991513
   * Decruft debconf template:
     - Remove ancient (postfix 2.3) mydomain_warning
     - Delete old (Postfix 2.10) relay_restrictions_warning
     - Delete unused lmtp_retired_warning template
     - Delete unused kernel_version_warning template
     - Delete unused retry_upgrade_warning template
     - Delete unused tlsmgr_upgrade_warning template
   * Debconf template cleanup, thanks to Markus Hiereth for the suggestions.
     Closes: #905653
 .
   [Miriam España Acebal]
 .
   * Removed LDFLAG -Bsymbolic-functions to fix issue where TLS is disabled
     when private/tlmsgr socket is not found.  lp: #1885403
 .
   [Christian Göttsche]
 .
   * Update debian/patches/07_sasl_config.diff:
     - Fix conversion warnings by adding explicit cast
     - Drop unused function xsasl_getpath
   * Fix lintian detected typos in Debian packaging.
   * Do not require postfix to be build by root.
   * Set -e shell option explicitly.
   * Bump watch file standard to version 4.
   * Add misc:Pre-Depends to postfix.
   * Remove trailing spaces in changelog.
   * Add Documentation key to postfix service.
   * Drop alternative dependency on obsolete libmysqlclient-dev.
   * Add standard salsa ci configuration.
   * Drop unused debconf template sqlite_warning.
 .
   [Paride Legovini]
 .
   * d/postfix.postinst: tolerate search domain with a leading dot.
     Closes: #991950
 .
   [Sergio Durigan Junior]
 .
   * Support networkd-dispatcher.  Closes: #999867  lp: #1718227
Checksums-Sha1:
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 b15e6c88ecb7dce46b99fde4a3491d4902185c19 204868 postfix_3.6.3-2.debian.tar.xz
 ba0a3a28e47f2038e7335e870804ddbfe78b365d 7705 postfix_3.6.3-2_source.buildinfo
Checksums-Sha256:
 ecf0388b0b1914d760bbb05a28b5c3138c664822c964f1a24db2d29cf306ab80 2976 postfix_3.6.3-2.dsc
 153c662756738a5d6ba0909de072cc142ec7690e5ee00226888e313af1ba5429 204868 postfix_3.6.3-2.debian.tar.xz
 595d89880c07e7d12cd0bb05100578f848c1c70331880f3e97cfb435076eac93 7705 postfix_3.6.3-2_source.buildinfo
Files:
 884ca34014a452fa32ba0269f3a8f4ef 2976 mail optional postfix_3.6.3-2.dsc
 048957a30bdac24f625688a54bdfb271 204868 mail optional postfix_3.6.3-2.debian.tar.xz
 efb1d62b23ed40951982fa2d8010682d 7705 mail optional postfix_3.6.3-2_source.buildinfo

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