Problem with splitted messages

[Ken Anderson (Pacific Internet)]

Interesting. I can see that you are correct, though we've had no
problems as a result.

-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluM000654
-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluN000654
-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluO000654
-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluP000654
-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluQ000654
-rw-------    6 root     root          711 Mar 10 09:11 dfi2AHBluR000654
-rw-------    2 root     root          729 Mar 10 09:11 dfi2AHBruM000811
-rw-------    2 root     root          729 Mar 10 09:11 dfi2AHBruN000811

-rw-------    1 root     root         1679 Mar 10 09:11 qfi2AHBluM000654
-rw-------    1 root     root         1677 Mar 10 09:11 qfi2AHBluN000654
-rw-------    1 root     root         1671 Mar 10 09:11 qfi2AHBluO000654
-rw-------    1 root     root         1673 Mar 10 09:11 qfi2AHBluP000654
-rw-------    1 root     root         1675 Mar 10 09:11 qfi2AHBluQ000654
-rw-------    1 root     root         1675 Mar 10 09:11 qfi2AHBluR000654
-rw-------    1 root     root         1795 Mar 10 09:11 qfi2AHBruM000811
-rw-------    1 root     root         1795 Mar 10 09:11 qfi2AHBruN000811


I suppose running a lot of MS processes with a lot of RAM kept this
issue from view, though larger batches would probably be processed if
the lock on the df files was shared.

Thanks,

Ken A.
Pacific.Net


Francesco Rotondo wrote:

> Hi all,
>
> I followed instructions found on this page
> http://www.sng.ecs.soton.ac.uk/mailscanner/serve/cache/169.html
> to obtain real indivual user preferences splitting messages with multiple
> recipients.
> Everything works fine except that MailScanner looks unable to process more
> than one splitted messages at time. Watching in the code I've found that the
> problem is in the way sendmail splits messages: it creates a qf and a df
> file for each splitted message in the queue but all the df files are hard
> links of the same file, thus MailScanner can exclusive lock just one of them
> at time. Does MailScanner really needs to exclusive lock df files or could a
> shared lock be enough, given that the exclusive lock on the qf files should
> already avoid multiple processing of the same message?
>
> Thanks in advance.
>
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