When I send an eMail with Kontact (KDEPIM), my Message-ID headers look like this:
Message-ID: <1548233.Ax4hfq5P2Q@pbecbengr-rivy-znaqngrq-ba.tglase.lan.tarent.de>
In contrast, my regular MUA uses:
Message-ID: <[email protected]>
So, why does KMail not use just the FQDN of my host, and why does it use the string “pbecbengr-rivy-znaqngrq-ba” (which is rot13 for “corporate-evil-mandated-on”)? Duckduckgoïng and googling for either string does not yield anything informative or at all…