SSL-Tools

SSL check results of nnik-bachmann.de

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Discover if the mail servers for nnik-bachmann.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 Mon, 19 May 2025 00:31:41 +0000

The mailservers of nnik-bachmann.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @nnik-bachmann.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.protonmail.ch
185.205.70.128
 10
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
31 s
mail.protonmail.ch
185.70.42.128
 10
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
31 s
mail.protonmail.ch
176.119.200.128
 10
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
43 s
mailsec.protonmail.ch
185.205.70.129
 20
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
24 s
mailsec.protonmail.ch
176.119.200.129
 20
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
13 s
mailsec.protonmail.ch
185.70.42.129
 20
supported
protonmail.com
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s

Outgoing Mails

We have not received any emails from a @nnik-bachmann.de address so far. Test mail delivery

Certificates

First seen at:

CN=protonmail.com

Certificate chain
  • protonmail.com
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • protonmail.com
Alternative Names
  • *.pm.me
  • *.protonmail.ch
  • *.protonmail.com
  • *.protonvpn.ch
  • *.protonvpn.com
  • protonmail.com
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-04-17
Not valid after
2025-07-16
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
48:88:18:BC:EC:98:32:F5:5B:41:0B:F4:6F:7B:DB:F4:DA:F1:9E:7F:2D:11:B9:09:F2:CC:60:3E:56:9F:5C:5B
SHA1
63:4F:09:04:3D:35:46:A1:5F:B5:AC:B8:03:26:28:60:F8:B5:54:13
X509v3 extensions
subjectKeyIdentifier
  • F1:A2:0A:FF:29:EF:F8:78:84:E8:07:0C:E0:56:8A:76:64:D2:2B:A5
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • OCSP - URI:http://r11.o.lencr.org
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r11.c.lencr.org/43.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:
  • 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A
  • Timestamp : Apr 17 12:26:20.025 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:87:65:C4:06:BB:5E:99:0F:64:FA:EA:
  • 8F:6B:88:4F:7F:4C:5D:3E:8F:1B:6A:86:43:D6:E1:C8:
  • 10:17:91:70:C0:02:20:11:AE:20:BD:93:4A:00:94:3C:
  • 2F:E1:87:FB:1E:95:E8:B9:81:BE:3B:5D:70:4E:DA:D7:
  • A1:BE:C3:DD:F5:6E:45
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Apr 17 12:26:21.973 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:F0:6F:18:0E:A1:0C:BC:9E:19:99:95:
  • 32:27:E0:AA:D7:78:55:13:BA:A5:4F:90:3E:AA:5B:BA:
  • 82:5A:AC:EA:24:02:21:00:A0:9D:D8:2E:5F:B3:DA:89:
  • AB:A7:BE:6B:1B:90:EB:F9:5C:99:B5:73:11:B6:82:CA:
  • C8:C5:48:0D:6D:3A:27:CB

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.protonmail.ch
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.mail.protonmail.ch
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.mailsec.protonmail.ch
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid
_25._tcp.mailsec.protonmail.ch
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—