Hello Gregor, Thank you, you are probably right, but I cannot locate which certificate is missing.
> Looking at > https://lists.debian.org/debian-announce/2016/msg00001.html , the > ca-certificates package looks like a plausible source, and its > changelog mentions that some CA certs were removed: > http://metadata.ftp-master.debian.org/changelogs/main/c/ca-certificates/ca-certificates_20141019+deb8u1_changelog > (some history in https://bugs.debian.org/806239 ). > > Further investigation shows that api.twilio.com uses some thawte > cert, and the changelog above shows that some thawte CAs have been > removed; not sure if they are exactly the same but this might be the > cause of your problems. > > So far for a preliminary investigation; since this does not happen on > the libsms-send-perl side, I'm reassiging the bug to ca-certificates > for now.
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