Startup Problem

[Martin Hepworth]

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Rick Chadderdon wrote:
> Drew Marshall wrote:
> 
>> On 18 Aug 2005, at 16:24, Rick Chadderdon wrote:
>>
>>> When I execute /opt/MailScanner/bin/check_mailscanner as root with:
>>>
>>> Run As User = postfix
>>> Run As Group = postfix
>>>
>>> in MailScanner.conf, I get the error:
>>>
>>> ---
>>> Starting MailScanner...
>>> Cannot open config file /opt/MailScanner/etc/MailScanner.conf,  
>>> Permission
>>> denied at /opt/MailScanner/lib/MailScanner/Config.pm line 592.
>>> ---
>>>
>>> Seems easy enough, but I'm stuck.  I've chowned
>>> /opt/MailScanner/etc/MailScanner.conf to postfix:postfix.  I've  
>>> chmodded the
>>> file all the way to 777 and done the same for every file and  
>>> directory in
>>> the opt/MailScanner/ tree (including /opt/MailScanner).  None of this
>>> helped, so I got more creative...
>>
>>
>>
>> My MailScanner.conf is owned by root and sits with 644 permissions  
>> and MailScanner is started by root. As part of it's start up it moves  
>> to the Postfix user.
>>
>> Drew
>>
> Thanks, Drew.  That's how mine installed by default.  My problem is that 
> something that happens when the program switches UID/GID is keeping it 
> from opening the MailScanner.conf file regardless of the ownership or 
> permissions of the file.  I'm guessing that it's some kind of locking 
> issue but I don't know where it is.
> Right now, the file is owned by root and is 644.  I'm giving the postfix 
> user a bash shell, using su -c to launch check_mailscanner as the 
> postfix user and then removing the user's shell.  It works this way, so 
> I know that it's not a permission problem.  This is not the most 
> convenient way to launch MailScanner, however, so I'd like to find a 
> better solution than scripting this workaround.
> 
> I'm wondering whether Config.pm is locking MailScanner.conf exclusively 
> (as root, since UID hasn't changed yet) while it's doing its QuickPeek 
> and then the postfix user can't get through the lock...  But, it doesn't 
> seem as though if that were the case that it would be only affecting 
> this machine.  In any case, since I have a workaround it's becoming 
> harder to get myself motivated to figure it out.  It will slowly drive 
> me insane, however.
> 
> If additional info will help anyone else come up with ideas, I'm running 
> kernel 2.6.12-gentoo-r9 (it was -r6 when I started), perl version 5.8.6, 
> spamassassin version 3.0.4 and this is a fresh install from the latest 
> tar file.  I installed with the install.sh script and when that produced 
> these problems I used emerge to replace the perl modules from the 
> default Gentoo setup.  After that failed to help I removed perl and 
> rebuilt it and then installed the modules with cpan.  Didn't help.  I'm 
> running out of things to try.
> 
> ------------------------ MailScanner list ------------------------

Rick

Postfix is more than likely running in chroot-ed jail and therefor can't 
see the /opt/MailScanner directories...There's some stuff in the wiki 
about this but not much..

http://wiki.mailscanner.info/doku.php?id=documentation:configuration:mta:postfix:installation


-- 
--
Martin Hepworth
Senior Systems Administrator
Solid State Logic Ltd
tel: +44 (0)1865 842300

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