How to solve qmail-inject: fatal: qq temporary problem (#4.3.0) Qmail and Qmail Scanner problems on Debian Linux Wheezy

fix-qq-error-qmail-inject-qq-temporary-problem-4.3.0-PoweredBy-qmail-Logo

Below QMAIL error
 

qmail-inject: fatal: qq temporary problem (#4.3.0)


occured to me right after upgraded from Debian Linux Squeeze 6 to Debian 7 Wheezy,

qmail-inject: fatal: qq temporary problem (#4.3.0) is really terrible error and I only experienced that error in my Thunderbird during sending mails, mail receiving doesn't work either, so as normally when there are problems with Qmail its a lot of puzzling until you get it.

There is no even trace in logs on what might be causing it, strangely enough nothing in qmail-smtpd, qmail-send logs, the mail server and all components seemed to work perfectly fine I checked whether there are libraries that are missing with a small loop line as follows:
 

 

root@pcfreak:/var/log/qmail/qmail-smtpd# for i in $(ls -1 /var/qmail/bin/*); do ldd $i |grep -i "not found"; done
root@pcfreak:/var/log/qmail/qmail-smtpd# 

 


The absence of result indicates, all binaries are properly linked and no found mmissing libraries.

After investigating closely what might be wrong and reading comments on Thibs QmailRocks Install Qmail-Scanner page, I realied
the error might be caused, because of problems with suid perl, as I already checked my earlier post in which I seemed to have faced the same qmail-inject: fatal: qq temporary problem (#4.3.0) error on Debian Wheezy and explained the possible reasons what might be causing the qq qmail error  here as well

 

and a related issue I experienced earlier with qmail scanner unable to create files in previous article here Suid Perl no longer available as a package and therefore because of the inability of perl to run as root anymore in Debian Wheezy, qmail-scanner-queue.pl script did not work either.
 

root@pcfreak:/downloads/simscan-1.4.0# 320  echo "hi, testing." > /tmp/mailtest.txt
root@pcfreak:/downloads/simscan-1.4.0# env QMAILQUEUE=/var/qmail/bin/qmail-scanner-queue /var/qmail/bin/qmail-inject you@yourdomain.com < /tmp/mailtest.txt
YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!
FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!
qmail-inject: fatal: qq permanent problem (#5.3.0)

root@pcfreak:/downloads/simscan-1.4.0# /var/qmail/bin/qmail-scanner-queue
YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!
FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!

 

 

A short note to make here is qmail-scanner-queue and qmail-scanner-queue.pl are set with suid bit set as follows:
 

root@pcfreak:/home/hipo/info# ls -al /var/qmail/bin/{qmail-scanner-queue,qmail-scanner-queue.pl}
-rwsr-sr-x 1 qscand qscand   6814 окт 14 17:22 /var/qmail/bin/qmail-scanner-queue*
-rwsr-sr-x 1 qscand qscand 158880 окт 14 23:52 /var/qmail/bin/qmail-scanner-queue.pl*

Good to say here is qmail-scanner-queue is a suid wrapper binary that actually invokes qmail-scanner-queue.pl
 

root@pcfreak:/downloads/simscan-1.4.0# su hipo
hipo@pcfreak:/downloads/simscan-1.4.0$ /var/qmail/bin/qmail-scanner-queue.pl -g
perlscanner: generate new DB file from /var/spool/qscan/quarantine-events.txt
hipo@pcfreak:/downloads/simscan-1.4.0$ exit

root@pcfreak:/downloads/simscan-1.4.0# cp /downloads/qmail-scanner-2.11st/contrib/logrotate.qmail-scanner /etc/logrotate.d/qmail-scanner
root@pcfreak:/downloads/simscan-1.4.0# chmod 644 /etc/logrotate.d/qmail-scanner
root@pcfreak:/downloads/simscan-1.4.0# cd /downloads/qmail-scanner-2.11st/contrib
root@pcfreak:/downloads/qmail-scanner-2.11st/contrib# chmod 755 test_installation.sh
root@pcfreak:/downloads/qmail-scanner-2.11st/contrib# ./test_installation.sh -doit
Sending standard test message – no viruses… 1/4
qmail-inject: fatal: qq temporary problem (#4.3.0)
Bad error. qmail-inject died


This are the other things, I've done to fix possible permission issues

root@pcfreak:/downloads/qmail-scanner-2.11st/contrib#  sudo -u qscand /var/qmail/bin/qmail-scanner-queue.pl -z
root@pcfreak:/downloads/qmail-scanner-2.11st/contrib# chown qscand:qscand /var/spool/qscan/qmail-scanner-queue-version.txt

In /etc/sudoers add following lines:

root@pcfreak:~# vim /etc/sudoers

ALL ALL=(qscand) NOPASSWD: /var/qmail/bin/qmail-scanner-queue.pl
##necroleak ALL=(ALL) ALL
Defaults        env_keep +="TCPREMOTEIP TCPREMOTEHOST TCPREMOTEINFO REMOTE_OS REMOTE_COUNTRY QS_SPAMASSASSIN SA_ONLYDELETE_HOST SA_WHITELIST
"


root@pcfreak:/downloads/qmail-scanner-2.11st/contrib# cat /etc/sudoers

# /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the man page for details on how to write a sudoers file.
#

Defaults    env_reset

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL) ALL
hipo    ALL=(ALL) ALL
ALL ALL=(qscand) NOPASSWD: /var/qmail/bin/qmail-scanner-queue.pl
##necroleak ALL=(ALL) ALL
Defaults        env_keep +="TCPREMOTEIP TCPREMOTEHOST TCPREMOTEINFO REMOTE_OS REMOTE_COUNTRY QS_SPAMASSASSIN SA_ONLYDELETE_HOST SA_WHITELIST"
# Allow members of group sudo to execute any command
# (Note that later entries override this, so you might need to move
# it further down)
%sudo ALL=(ALL) ALL
#
#includedir /etc/sudoers.d

In case you wonder why we put the line in /etc/sudoers:
 

Defaults        env_keep +="TCPREMOTEIP TCPREMOTEHOST TCPREMOTEINFO REMOTE_OS REMOTE_COUNTRY QS_SPAMASSASSIN SA_ONLYDELETE_HOST SA_WHITELIST"


The reason behind this is that by default sudo resets the environment variables when executing the command. Thus qmail-scanner cannot recognize the important info regarding the incoming mail and treats everything as coming from localhost, which leads to passing everything without scanning. The above line preserves the important ENV variables for qmail-scanner.

In /etc/sudoers add following lines:
 

root@pcfreak:/downloads/qmail-scanner-2.11st/contrib# vim /var/qmail/bin/qmail-scanner-queue.pl


Right after comments or in Line 1  ADD
 

my $real_uid="qscand";

my $effective_uid="qscand";


Also somewhere in the beginning of scripts lets say after above two variable declarations add:
 

$ENV{'PATH'}='/bin:/usr/bin';
$whoami = getpwuid($<) || "unknown";
if($whoami ne "qscand") {
    exec("/usr/bin/sudo -u qscand /var/qmail/bin/qmail-scanner-queue.pl") || die;
}


To prevent your users logged in on physical console and via SSH it is necessery to disable emergency logs for users in syslog / rsyslog, otherwise due to bug, users will logged in will get flooded with messages such as:
 

Message from syslogd@pcfreak at Oct 15 16:43:04 …
 qmail-scanner-queue.pl: qmail-scanner[6834]: Clear:RC:0(95.142.194.223):SA:0(-2.0/2.0): 2.959242 10574 admin@notify.vk.com hipo@pc-freak.net Светлана_Георгиева_оставила_Вам_личное_соо� <36b63ec9a0ce7ecc570de2fcbba6ed73@localhost.localdomain> 1508074981.6836-1.pcfreak:6219 1508074981.6836-0.pcfreak:545

 

open /etc/rsyslog.conf and find the line starting with:
 

root@pcfreak:~# vim /etc/rsyslog.conf

*.emerg

add
;user.none

right after it so it reads like:

*.emerg;user.none

Share this on

More helpful Articles

Download PDFDownload PDF

One Response to “How to solve qmail-inject: fatal: qq temporary problem (#4.3.0) Qmail and Qmail Scanner problems on Debian Linux Wheezy”

  1. admin says:
    Firefox 52.0 Firefox 52.0 GNU/Linux x64 GNU/Linux x64
    Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0

    One very important thing I forgot to mention to solve the issue if it is related to missing Perl module Digest::SHA1 if there are some indications in the logs like:

    4000000059e8cf5d1835038c qmail-smtpd[23952]: RCPT TO:<hip0d@yandex.ru>
    @4000000059e8cf5d1c8a30c4 Can't locate Digest/SHA1.pm in @INC (you may need to install the Digest::SHA1 module) (@INC contains: /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.20.2 /usr/local/share/perl/5.20.2 /usr/lib/x86_64-linux-gnu/perl5/5.20 /usr/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.20 /usr/share/perl/5.20 /usr/local/lib/site_perl) at /var/qmail/bin/qmail-scanner-queue.pl line 3535.
    @4000000059e8cf5d1c8a3c7c BEGIN failed–compilation aborted at /var/qmail/bin/qmail-scanner-queue.pl line 3535.
    @4000000059e8cf610b05a9b4 tcpserver: status: 2/30


    is to install the perl module with CPAN to solve it:

    cpan[1]> install Digest::SHA1
    CPAN: Storable loaded ok (v2.49_01)
    Reading '/root/.cpan/Metadata'
      Database was generated on Sat, 14 Oct 2017 12:54:02 GMT
    CPAN: LWP::UserAgent loaded ok (v6.06)
    CPAN: Time::HiRes loaded ok (v1.9726)
    Fetching with LWP:
    http://www.perl.org/CPAN/authors/01mailrc.txt.gz
    CPAN: YAML loaded ok (v1.13)

     

    View CommentView Comment

Leave a Reply

CommentLuv badge