Ian Stradling:
> Hi,
>
> I am new to the world of Postfix and have been requested by my employer to
> set up a series of Email Delay Notifications for our server.
>
> A bit of information:
>
> Postfix version 2.3.8-2+etch1
> Debian 4
>
> Currently the main.cf file is set to:
> delay_warning_time = 4h
>
> I understand this to mean that after 4 hours the sender will receive a
> delayed email notification.
>
> What I have been tasked to do is try to set up a series of Delayed Email
> Notifications as follows:
> 10 minutes
> 30 minutes
> 1 hour
> 3 hours
> 6 hours
As documented, Postfix supports exactly ONE delay notification.
It is a bad idea to send multiple notifications for one message.
Doing so causes email explosion (one message results in many
messages) when a destination is down for an extended amount of time.
Besides delay notification, Postfix supports notification of
successful delivery. Perhaps that is more appropriate if people
want to find out when mail arrives.
Wietse
