/var/log/maillog qmail-scanner error

We were getting this series of errors when running the qmail-scanner test script (/downloads/qmailrocks/qmail-scanner-1.25/contrib/test_installation.sh -doit):

spamd[18368]: spamd: connection from localhost.localdomain [127.0.0.1] at port 51721 
spamd[18368]: spamd: setuid to qscand succeeded 
spamd[18368]: spamd: creating default_prefs: /home/qscand/.spamassassin/user_prefs 
spamd[18368]: config: cannot write to /home/qscand/.spamassassin/user_prefs: Permission denied 
spamd[18368]: spamd: failed to create readable default_prefs: /home/qscand/.spamassassin/user_prefs 
spamd[18368]: spamd: checking message <20061020172304.21308.qmail@leikata.softpixel.com> for qscand:509 
spamd[18368]: locker: safe_lock: cannot create tmp lockfile /home/qscand/.spamassassin/auto-whitelist.lock.leikata.softpixel.com.18368 for /home/qscand/.spamassassin/auto-whitelist.lock: Permission denied 
spamd[18368]: auto-whitelist: open of auto-whitelist file failed: locker: safe_lock: cannot create tmp lockfile /home/qscand/.spamassassin/auto-whitelist.lock.leikata.softpixel.com.18368 for /home/qscand/.spamassassin/auto-whitelist.lock: Permission denied 
spamd[18368]: bayes: locker: safe_lock: cannot create tmp lockfile /home/qscand/.spamassassin/bayes.lock.leikata.softpixel.com.18368 for /home/qscand/.spamassassin/bayes.lock: Permission denied 
spamd[18368]: spamd: clean message (-0.0/5.0) for qscand:509 in 0.0 seconds, 327 bytes. 
spamd[18368]: spamd: result: . 0 - NO_RECEIVED,NO_RELAYS scantime=0.0, size=327,user=qscand,uid=509, required_score=5.0,rhost=localhost.localdomain, raddr=127.0.0.1, rport=51721,mid=< 20061020172304.21308.qmail@leikata.softpixel.com>, autolearn=failed 
spamd[18366]: prefork: child states: II 
qmail-scanner[21309]: Clear:RC:1(127.0.0.1):SA:0(0.0/5.0): 0.068512 327 <> postmaster@softpixel.com Qmail-Scanner_test_(1/4):_inoffensive_message <20061020172304.21308.qmail@leikata.softpixel.com> 1161364984.21311-0.leikata:68 orig-leikata116136498477521309:327 
X-Antivirus-MYDOMAIN-1.25-st-qms: [leikata116136498577521320] clamdscan: corrupt or unknown clamd scanner error or memory/resource/perms problem - exit status 512/2

I had to manually create the .spamassassin directory for user spamd:

# cd /home/qscand
# mkdir .spamassassin
# chown qscand:qscand .spamassassin/
# chmod 700 .spamassassin/

This solved the first few errors.

We still got the qmail-scanner error, however:

spamd[21615]: spamd: connection from localhost.localdomain [127.0.0.1] at port 52795 
spamd[21615]: spamd: checking message <20061020174801.21726.qmail@leikata.softpixel.com> for root:510 
spamd[21615]: spamd: clean message (-0.0/5.0) for root:510 in 0.1 seconds, 327 bytes. 
spamd[21615]: spamd: result: . 0 - NO_RECEIVED,NO_RELAYS scantime=0.1,size=327,user=root,uid=510, required_score=5.0, rhost=localhost.localdomain, raddr=127.0.0.1,rport=52795, mid=< 20061020174801.21726.qmail@leikata.softpixel.com>, autolearn=ham 
spamd[21612]: prefork: child states: II 
qmail-scanner[21727]: Clear:RC:1(127.0.0.1):SA:0(0.0/5.0): 0.105559 327 <> postmaster@softpixel.com Qmail-Scanner_test_(1/4):_inoffensive_message < 20061020174801.21726.qmail@leikata.softpixel.com> orig-leikata116136648177521727:327 1161366481.21729-0.leikata:68 
X-Antivirus-MYDOMAIN-1.25-st-qms: [leikata116136648177521738] clamdscan: corrupt or unknown clamd scanner error or memory/resource/perms problem - exit status 512/2

By turning on debugging in qmail-scanner.pl, I determined that this was a permissions issue: qmail-scanner was running clamd as user qscand, but user qscand didn’t have privileges to see the files qmail-scanner wanted it to scan.

Making qmail-scanner run as root by disabling the setuid line in /etc/clamd.conf…

# Run as a selected user (clamd must be started by root).
# Default: disabled
#User qscand

…causes it to work (and the qmail-scanner test script to execute successfully), but we really shouldn’t be doing this.

Instead we need to make qmail-scanner write the files to scan with appropriate permissions.

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