Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the mail system at host main.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<chiara at fitnesspertutti.com>: Host or domain name not found. Name service error
    for name=mail.peewpew.pw type=AAAA: Host not found
-------------- next part --------------
An embedded message was scrubbed...
From: DouglasVet <debian-science-maintainers at alioth-lists.debian.net>
Subject: Fitness Per Tutti .com: CRYPTOCURRENCY DROP WILL MAKE YOU A MILLIONAIRE
Date: Sun, 7 Aug 2022 05:46:38 +0000
Size: 969
URL: <http://alioth-lists.debian.net/pipermail/debian-science-maintainers/attachments/20220807/5198a7b0/attachment.eml>