Re: [exim] Monitoring sent emails of a user

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Autor: Philip Hazel
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A: Jason Meers
CC: Sub Zero, exim-users
Assumpte: Re: [exim] Monitoring sent emails of a user
On Fri, 17 Feb 2006, Jason Meers wrote:

> I have seen system filters that check for "first_delivery" to make sure that
> the message is only processed once even though system filters only run once
> for each message.


That is not correct. The system filter runs once per *delivery attempt*
per message. That is why is *is* correct to check first_delivery if you
want to do something like take a copy of a message.

A "delivery attempt" is when Exim looks at the message and tries to
deliver to all the as yet undelivered recipients. (Technically, it runs
a "delivery process" on the message.)

> Handling errors on messages that were intended to be "unseen" also seems to be
> causing some people grief.


In a filter, you can use "errors_to" to redirect the errors address. You
can also use "noerror" to ignore delivery errors.

> If any of you can share your opinions or configs on this with me I will
> summarise them back to the list for approval first, then write up a howto to
> PDF or post on the wiki once we have a broad consensus.


That is an excellent idea. Thank you.

-- 
Philip Hazel            University of Cambridge Computing Service
Get the Exim 4 book:    http://www.uit.co.uk/exim-book