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Problem:

I get an email with the following message each day:

Final-Recipient: rfc822; [email protected] Action: failed Status: 5.0.0 Diagnostic-Code: smtp; The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser m80sor786079wmg.52 - gsmtp Last-Attempt-Date: Wed, 18 Apr 2018 23:32:30 -0700 (PDT)

---------- Doorgestuurd bericht ---------- From: Cron Daemon To: [email protected] Cc: Bcc: Date: Thu, 19 Apr 2018 06:32:28 +0000 (UTC) Subject: Cron test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ) /etc/cron.daily/apt: WARNING: The following packages cannot be authenticated! google-compute-engine google-compute-engine-jessie google-config-jessie
google-compute-engine-init-jessie

Possible solution:

If I am right, it is about packages that should be updated, making the system trying to send an email to [email protected], but this email does not exist.

Do you think I can solve the problem by updating the packages?

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    You have 2 different problems : 1) The google packages can't be authenticated 2) the cron mail address does not exist, therefore the error report of 1) can't be sent Commented Apr 20, 2018 at 8:43
  • Ok. But I can not find how to change the cron mail address.. Commented May 3, 2018 at 6:45

1 Answer 1

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You are missing a key, run this to get a new key

curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

after that upgrade your packages

sudo apt-get update && sudo apt-get upgrade
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