Re: 1. Re: Ordinary user account can't log in; 2. Greylisting

[Martin Husemann <martin%duskware.de@localhost>]

On Wed, Oct 09, 2024 at 08:43:29AM +0100, Stephen Borrill wrote:
> On Tue, 8 Oct 2024, Jay F. Shachter wrote:
> [snip]
> > Unrelated to the above -- I sent this message hours ago to the mailing
> > list, and the SMTP server at mail.netbsd.org sent me back a 450 error
> > because it was greylisting me, which I only noticed a few minutes ago.
> > I think it is moronic to greylist people who are on the netbsd-users
> > mailing list.  Is there any empirical reason why this is being done?
> 
> Was your email plain text or was it multipart/alternative with HTML? The
> latter would be greylisted.

Yes, it probably was both.

The multipart/alternative would be sent to the mailing list owner
for manual approval and will only show up on the list after that (which
could take anything from a few minutes to a few days).

The greylisting is happening to all mails that come in from unknown IP
addresses and it can't be avoided for list subscribers - as the email
address may be a lie.

Greylisting is harmless and only causes a very small delay in mail delivery.
It needs no manual intervention.

Martin