* null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg]
[not found] <BB7ACCC2C36C421386B4BBD4EA97440F@ewsd.inri.net>
@ 2020-08-21 17:47 ` Ethan Gardener
2020-08-21 17:55 ` Kurt H Maier
2020-08-21 20:38 ` Lyndon Nerenberg
0 siblings, 2 replies; 3+ messages in thread
From: Ethan Gardener @ 2020-08-21 17:47 UTC (permalink / raw)
To: 9front
> NOTE: If you are using a mail server that is not RFC 2821/2822
> compliant in that it rejects or discards emails with "NULL" addresses,
> you will NOT be able to complete the registration process.
is there ever a legitimate use for null addresses?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg]
2020-08-21 17:47 ` null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg] Ethan Gardener
@ 2020-08-21 17:55 ` Kurt H Maier
2020-08-21 20:38 ` Lyndon Nerenberg
1 sibling, 0 replies; 3+ messages in thread
From: Kurt H Maier @ 2020-08-21 17:55 UTC (permalink / raw)
To: 9front
On Fri, Aug 21, 2020 at 06:47:53PM +0100, Ethan Gardener wrote:
> > NOTE: If you are using a mail server that is not RFC 2821/2822
> > compliant in that it rejects or discards emails with "NULL" addresses,
> > you will NOT be able to complete the registration process.
>
> is there ever a legitimate use for null addresses?
There are several such messages in various RFCs, mostly delivery status
and message disposition emails. They're sent with null reverse-paths to
prevent nondeliverable notificiation loops. The other place null
addresses show up is in emails with multiple delivery targets where
something broke during populating them like
To: you@example.com,me@example.com,,them@example.com,other@example.com
note the 'null address' between commas in the middle.
RFC2822 declares the latter to be obsolete but receivers must accept
them.
khm
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg]
2020-08-21 17:47 ` null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg] Ethan Gardener
2020-08-21 17:55 ` Kurt H Maier
@ 2020-08-21 20:38 ` Lyndon Nerenberg
1 sibling, 0 replies; 3+ messages in thread
From: Lyndon Nerenberg @ 2020-08-21 20:38 UTC (permalink / raw)
To: 9front
Ethan Gardener writes:
> is there ever a legitimate use for null addresses?
DSNs, MDNs, "vacation" messages. Basically, anything where you don't
want any form of delivery notification.
--lyndon
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <BB7ACCC2C36C421386B4BBD4EA97440F@ewsd.inri.net>
2020-08-21 17:47 ` null email address question [was: Re: [9front] [ports] updated zlib, libpng, libjpeg] Ethan Gardener
2020-08-21 17:55 ` Kurt H Maier
2020-08-21 20:38 ` Lyndon Nerenberg
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