Discover if the mail servers for stb-koestler.de can be reached through a secure connection.
To establish a secure connection a mail server has to offer STARTTLS (SSL), a trustworthy SSL certificate, support for the Diffie-Hellman-Algorithm to guarantee Perfect Forward Secrecy and must not be vulnerable against the Heartbleed attack. Futhermore we recommend using end-to-end encryption with GnuPG.
Report created Thu, 30 Jul 2020 23:34:13 +0000
These servers are responsible for incoming mails to @stb-koestler.de addresses.
Hostname / IP address | Priority | STARTTLS | Certificates | Protocol | ||
---|---|---|---|---|---|---|
webmail.stb-koestler.de
80.153.72.204
Results incomplete
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10 |
supported
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not checked |
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1 s
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We have not received any emails from a @stb-koestler.de address so far. Test mail delivery
No Certificates found
DNS-based Authentication of Named Entities (DANE) is a protocol to allow X.509 certificates to be bound to DNS using TLSA records and DNSSEC.
Name | Options | DNSSEC | Matches |
---|---|---|---|
_25._tcp.webmail.stb-koestler.de |
|
valid
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