SSL-Tools

SSL check results of wittco.de

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Discover if the mail servers for wittco.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

JSON Refresh

Report created Sun, 29 Jun 2025 00:30:20 +0000

The mailservers of wittco.de can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @wittco.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
wittco.de
87.106.173.47
 10
supported
wittco.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
mail.wittco.de
87.106.173.47
 20
supported
wittco.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

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

Certificates

First seen at:

CN=wittco.de

Certificate chain
  • wittco.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • wittco.de
Alternative Names
  • mail.wittco.de
  • wittco.de
  • www.wittco.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-06-25
Not valid after
2025-09-23
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
42:2C:33:B4:76:B8:7E:90:6C:73:DB:A5:D6:DF:73:97:5A:27:66:87:48:30:50:89:F3:0C:03:73:B3:2E:9A:87
SHA1
CE:AC:04:94:5A:67:60:0B:C0:3E:EB:57:D2:E9:D7:E5:77:59:08:53
X509v3 extensions
subjectKeyIdentifier
  • D0:A7:DC:25:62:A6:9F:01:5A:22:7D:33:38:B6:C4:83:EF:42:1F:27
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • 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/7.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : ED:3C:4B:D6:E8:06:C2:A4:A2:00:57:DB:CB:24:E2:38:
  • 01:DF:51:2F:ED:C4:86:C5:70:0F:20:DD:B7:3E:3F:E0
  • Timestamp : Jun 25 23:59:40.616 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:A1:C7:46:16:9E:54:9F:FE:63:22:3C:
  • 60:78:03:DC:78:2A:0D:B2:76:72:95:48:D1:59:26:1D:
  • 59:13:57:27:27:02:20:40:A9:AB:CB:8C:84:F4:84:C0:
  • 22:5C:F9:FC:73:EA:89:98:F7:42:63:BC:76:EF:67:00:
  • 16:85:52:D7:74:C8:B2
  • 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 : Jun 25 23:59:40.629 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:DF:14:87:75:1F:87:61:0D:73:2D:7E:
  • B5:D1:B4:EE:14:6D:49:39:11:40:3F:D4:1C:77:B3:50:
  • D4:23:82:3F:AE:02:21:00:C8:2D:36:A5:86:2F:45:F3:
  • 03:09:CD:13:DC:86:00:71:99:78:34:D7:4D:C7:AD:7E:
  • EA:68:AF:C0:01:3E:43:3A