Subject: Undeliverable: Ich werde zum Tee kommen.
From: Postmaster <[email-masked]>
To: [email-masked]
Date: Sun, 31 Jan 2021 12:42:08 +0100

This is the mail system at host tux28.trendhosting-net.ch.

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<[email-masked]> failed: [smtpfw2local.youthhostel.ch]:
    452 4.3.1 Insufficient system resources (UsedDiskSpace[C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\data\Queue])