[ih] Early email systems

[ian.peter at ianpeter.com]

Perhaps I should explain further about the MAILER-Daemon notifications: 
I thought someone here might know.

I know the term Daemon has been used since the 1960s to describe various 
UNIX background processes: what I am looking for is an understanding 
about how they became invoked in email systems: were they perhaps part 
of POP of IMAP protocols? Or introduced in some other way when an email 
goes astray or to an unknown address?

Thanks for the information on sndmsg Dave - I thought that would be the 
case, and I think that is enough info for me on that. Somebody asked me 
these questions, I think maybe something to do with a patent application 
lawsuit, but as IANAT (I am not a techhead) I didn't feel I could answer 
adequately and I thought people here might be able to help.

Ian Peter

------ Original Message ------
From: "Dave Crocker" <dhc at dcrocker.net>
To: "ian.peter at ianpeter.com" <ian.peter at ianpeter.com>; 
internet-history at postel.org
Sent: 18/07/2018 8:56:30 AM
Subject: Re: [ih] Early email systems

>On 7/15/2018 8:57 PM, ian.peter at ianpeter.com wrote:
>>Does anyone know the origins of mailer Daemon notifications? I guess
>
>I don't understand the question.
>
>
>>they have been around for sometime but if anyone knows when they were
>>introduced I would be interested.
>>
>>Also, were there any systems in email preceding this which notified eg
>
>"preceding this"?  preceding what?
>
>
>>when a message was not sent, when a system was offline, could not be
>>delivered etc?
>
>I know that sndmsg gave real-time feedback about delivery 
>success/failure during transmissions.  This was the very early 1970s.
>
>d/
>
>-- Dave Crocker
>Brandenburg InternetWorking
>bbiw.net