[Ach] TLS survey for SMTP?

Juraj Somorovsky juraj.somorovsky at rub.de
Wed Jun 13 00:49:12 CEST 2018

Hi René,

these two papers are a bit older (2016), but maybe helpful:

We also had some scans for our DROWN attack:


On 13.06.2018 00:09, René Pfeiffer wrote:
> Hello, List!
> Has anyone seen a survey/scan/measurement of how many (publicly reachable)
> SMTP servers support TLS? There are sources/scans for this with regards to
> HTTPS, but I'd like to know if someone did the statistics for SMTP as well.
> Cheers,
> René.
> _______________________________________________
> Ach mailing list
> Ach at lists.cert.at
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