Re: [Exim] Malware and Spam Scanning in an ISP environment w…

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著者: Philip Hazel
日付:  
To: Marc Haber
CC: exim-users
題目: Re: [Exim] Malware and Spam Scanning in an ISP environment with "Mandantenfaehigkeit"
On Thu, 4 Dec 2003, Marc Haber wrote:

> I can understand that. However, it would be _very_ good to have some
> means of "this filter has already been run successfully on this
> message" in addition to "we have already started at least once to run
> the filter on this message, but we don't know if the filter ever
> finished".


If the system filter didn't finish - presumably because the system
crashed or the power failed or the process got chopped or something -
then Exim will not have updated the spool file for the message, and so
it will still be in "first_delivery" state next time.

In other words, the "first_delivery" flag gets unset only if an Exim
delivery process gets through the delivery attempt and ends up with
some addresses that it has to try again later, and then successfully
updates the spool file for the message.

--
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book