SSL-Tools

SSL check results of flower5.org

NEW You can also bulk check multiple servers.

Discover if the mail servers for flower5.org 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, 29 Sep 2021 14:39:22 +0000

No connection to the mailservers of flower5.org could be established.

Servers

Incoming Mails

These servers are responsible for incoming mails to @flower5.org addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
srv5.flower5.org
199.167.194.69
Results incomplete
10
supported
not checked
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
3 s
mail.tutanota.de
81.3.6.165
Results incomplete
50
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mail.tutanota.de
81.3.6.162
Results incomplete
50
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

We have received emails from these servers with @flower5.org sender addresses. Test mail delivery

Host TLS Version & Cipher
srv5.flower5.org (199.167.194.69)
TLSv1.3 TLS_AES_256_GCM_SHA384

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.tutanota.de
  • DANE-EE: Domain Issued Certificate
  • Use full certificate
  • SHA-256 Hash
valid
—
_25._tcp.mail.tutanota.de
  • DANE-EE: Domain Issued Certificate
  • Use full certificate
  • SHA-256 Hash
valid
—