CentOS 4.1 final w/posix lock still having issues

[Alex Neuman]

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Richard D Alloway wrote:
> On Thu, 6 Oct 2005, Richard D Alloway wrote:
>
>> On Wed, 5 Oct 2005, Kevin Spicer wrote:
>>
>>> On Wed, 2005-10-05 at 10:17 -0400, Richard D Alloway wrote:
>>>> But, I still get deliveries with the dreaded "Message body 
>>>> disappears" errors.
>>> ...
>>>> What should I look for at this point?
>>>
>>> Wild shot in the dark, from the one time I saw this myself (very long
>>> time ago).  Make sure that sendmail is being started from the
>>> MailScanner startup scripts and that you have the noetrn option on in
>>> that startup script (its there by default so it should be...).  Also
>>> worth grepping the logs for etrn, just in case the command line option
>>> isn't being honoured for some reason.  You don't want to let folks use
>>> etrn!
>>>
>>> Probably not your problem, but doesn't hurt to check.
>>
>> Thanks for the suggestions, but it doesn't look like etrn is the 
>> issue.  We don't have anyone using etrn at all on any of our mail 
>> servers at this point and the noetrn option is in the MailScanner 
>> startup script.  Also, the only reference to etrn in the logs are 
>> lines like:
>>
>> Oct  6 09:59:55 smtp-gateway-5 sendmail[22406]: j96DxtOg022406: 
>> [218.68.xxx.xxx] did not issue MAIL/EXPN/VRFY/ETRN during connection 
>> to MTA
>>
>> So, there's still something going on that I'm not aware of...
>>
>> Any other thoughts? :)
>>
>> -Rich
>
> In addition to any further thoughts anyone has regarding why identical 
> installations fail (No Message Collected error) when the only 
> difference is the one failing is the only CentOS box deployed, can 
> someone tell suggest a way to watch the locking processes for sendmail 
> and MailScanner?
>
> I can do a strace on sendmail and watch sendmail opening the files in 
> mqueue.in with O_EXCL but watching MailScanner with the same options 
> to strace only shows a bunch of temp files in /tmp and some for clamav.
>
> This is regardless of whether it is one of my 5 boxes that is working 
> or the 1 box that isn't.
>
> Thanks!
>
> -Rich
>
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I once had a problem on a CentOS box that seemed to be lock-related. 
 From time to time messages would be delivered with extra LF's and 
dovecot would refuse to read them. The problem went away when I set Max 
Child Processes = 1; I don't remember if/how I solved it after that.

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