SSL-Tools

SSL check results of sky-networks.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for sky-networks.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.

Summary

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Report created Wed, 23 Sep 2026 10:29:03 +0000

No connection to the mailservers of sky-networks.de could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @sky-networks.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.snmx.de
2a01:4f8:c2c:24f1::1
Results incomplete
10
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s
mail.snmx.de
49.12.236.122
Results incomplete
10
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
2 s

Outgoing Mails

We have received emails from these servers with @sky-networks.de sender addresses. Test mail delivery

Host TLS Version & Cipher
caesium.selfhost.de (185.26.156.237)
TLSv1.2 ECDHE-RSA-AES128-GCM-SHA256

Certificates

No Certificates found

DANE

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.mail.snmx.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
error
Debug
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