[atnog] Anyone from T-Mobile Austria?

[Kaiser, Karl]

Forwarding this
BR KK

-----Ursprüngliche Nachricht-----
Von: atnog <atnog-bounces at atnog.at> Im Auftrag von lukn via atnog
Gesendet: Donnerstag, 12. Juni 2025 15:02
An: atnog at atnog.at; mailop at mailop.org
Betreff: [atnog] Anyone from T-Mobile Austria?

Hi Atnog/Mailop

Is anyone from t-mobile Austria reading here?

We encountered a possible misconfiguration of one of their services:

mms.t-mobile.at has no SPF record and does not sign their mail with DKIM. However, t-mobile.at has a DMARC record set. In a strict setup evaluating DMARC organizational domain, DMARC checks fail for mms.t-mobile.at.
As long as p=none remains, it's probably not a big issue. But should that ever change...

Kind regards
lukn
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