SSL-Tools

SSL check results of tw-it.de

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Discover if the mail servers for tw-it.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 Thu, 25 Apr 2024 21:05:24 +0000

The mailservers of tw-it.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @tw-it.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.tw-it.de
2a01:4f8:262:12c9::2
 10
supported
tw-it.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mail.tw-it.de
167.235.2.244
 10
supported
tw-it.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=tw-it.de

Certificate chain
  • tw-it.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • tw-it.de
Alternative Names
  • *.tw-it.de
  • tw-it.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2024-03-05
Not valid after
2024-06-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
CE:72:68:49:FF:F0:85:86:DA:F8:57:AD:72:30:B7:4E:6F:F3:AB:AD:27:61:14:AA:8D:4C:62:41:CA:33:40:47
SHA1
88:58:65:09:38:72:9A:EE:AF:D0:7C:41:6A:51:A1:66:63:C6:84:D3
X509v3 extensions
subjectKeyIdentifier
  • E5:B0:A9:3F:2B:95:91:82:11:C4:61:27:A0:96:E3:33:88:54:AC:2D
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 3B:53:77:75:3E:2D:B9:80:4E:8B:30:5B:06:FE:40:3B:
  • 67:D8:4F:C3:F4:C7:BD:00:0D:2D:72:6F:E1:FA:D4:17
  • Timestamp : Mar 5 12:36:10.833 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:98:D1:B5:F6:23:C4:7E:2B:70:30:4B:
  • 6C:C1:CD:28:25:E9:21:C0:B7:63:16:E1:53:8D:E8:15:
  • F8:99:0C:6E:33:02:21:00:96:74:81:3F:F1:95:12:28:
  • 37:2E:B8:3F:AA:4D:CE:33:36:94:CD:87:DC:54:9E:ED:
  • 9F:ED:09:97:4F:8F:CF:83
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Mar 5 12:36:10.867 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:73:5B:5F:2F:CB:44:20:F4:EB:2C:1C:D4:
  • 6C:3D:67:7A:11:29:07:0A:50:9E:FE:09:6C:DF:E4:AD:
  • 54:A6:D1:F1:02:20:57:8D:EA:91:92:62:84:40:2E:DB:
  • 53:F8:67:76:90:65:EC:13:48:BB:C4:9F:C8:D7:A3:72:
  • F8:E6:B4:8A:79:7C