D'ou provient ce mail ?

Bonjour,

Quelqu'un (au hasard @Fritz2cat :) ) peut-il me dire comment savoir d’où provient cet email ?
La partie :
> Received: from output44.mail.ovh.net

me fait penser qu'il pourrait provenir de l'infra OVH.

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id B4C2C23783; Fri, 19 May 2023 06:45:25 +0000 (UTC)
Date: Fri, 19 May 2023 06:45:25 +0000
From: Mail Delivery System
Subject: Undelivered Mail Returned to Sender
To:
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Merci !