[CentOS] permission problems with avamis and Centos 6.3

Daniel J Walsh dwalsh at redhat.com
Thu Jan 24 19:48:46 UTC 2013


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On 01/24/2013 01:15 PM, Robert Moskowitz wrote:
> Thank you for your suggestion, but it did not fix the permissions problem.
> 
> On 01/24/2013 10:13 AM, Rob wrote:
>> usermod -a -G amavis clam
> 
> How is this different from:
> 
> gpasswd -a clam amavis
> 
> And I am still getting the permissions error.
> 
>> service clamd restart
>> 
>> be happy
>> 
>> On 24.01.2013, at 04:16, Robert Moskowitz <rgm at htt-consult.com> wrote:
>> 
>>> I am trying to follow:
>>> 
>>> http://wiki.centos.org/HowTos/Amavisd
>>> 
>>> Which seems to really be written for Centos 5, with just some selinux 
>>> references for Centos 6.  There are real problems here for Centos 6
>>> with the userids section.
>>> 
>>> It gives the following command and result:
>>> 
>>> cat /etc/passwd | grep "amavis\|clamav" clamav:x:101:102:Clam Anti
>>> Virus Checker:/var/clamav:/sbin/nologin amavis:x:102:103:Amavis email
>>> scan user:/var/amavis:/bin/sh
>>> 
>>> But my Centos 6.3 has:
>>> 
>>> clam:x:494:490:Clam Anti Virus Checker:/var/lib/clamav:/sbin/nologin 
>>> amavis:x:493:489::/var/spool/amavisd:/sbin/nologin
>>> 
>>> Note the difference in userid clam instead of clamav.  So this causes 
>>> problems with the group recommendation:
>>> 
>>> In addition, the clamav user should automatically have been added to
>>> the amavis group:
>>> 
>>> # groups clamav clamav : clamav amavis
>>> 
>>> If not, you can manually add clamav to the amavis group:
>>> 
>>> gpasswd -a clamav amavis
>>> 
>>> 
>>> so I did:
>>> 
>>> gpasswd -a clam amavis
>>> 
>>> 
>>> So far, it seems just changing what userid is now used by clamav...
>>> 
>>> But in testing for spam I see the following in /var/log/maillog
>>> 
>>> Jan 23 15:56:17 test1 amavis[25669]: (25669-01) (!)run_av
>>> (ClamAV-clamd) FAILED - unexpected , 
>>> output="/var/spool/amavisd/tmp/amavis-20130123T155617-25669/parts: 
>>> lstat() failed: Permission denied. ERROR\n"
>>> 
>>> I checked this directory tree and all along the tree the permissions
>>> are to amavis:amavis
>>> 
>>> So where is my permission problem?
>>> 
>>> 
>>> _______________________________________________ CentOS mailing list 
>>> CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos
>> _______________________________________________ CentOS mailing list 
>> CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos
>> 
> 
> _______________________________________________ CentOS mailing list 
> CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos
> 
Can you attach the AVC messages from audit log.

ausearch -m avc -ts recent

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