SSL-Tools

SSL check results of www.vdlufa-nirs.de

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Discover if the mail servers for www.vdlufa-nirs.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 Mon, 04 May 2026 09:25:58 +0000

We can not guarantee a secure connection to the mailservers of www.vdlufa-nirs.de!

Please contact the operator of www.vdlufa-nirs.de and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/www.vdlufa-nirs.de

Servers

Incoming Mails

These servers are responsible for incoming mails to @www.vdlufa-nirs.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
vdlufa-nirs.de
2a01:238:43ec:4e00:7fd8:29ef:1145:2ed5
Results incomplete
10 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
vdlufa-nirs.de
85.214.72.65
 10
supported
www.vdlufa-nirs.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

We have not received any emails from a @www.vdlufa-nirs.de address so far. Test mail delivery

Certificates

First seen at:

CN=www.vdlufa-nirs.de

Certificate chain
  • www.vdlufa-nirs.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
      R12
Subject
Common Name (CN)
  • www.vdlufa-nirs.de
Alternative Names
  • www.nirs.de
  • www.vdlufa-nirs.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R12
validity period
Not valid before
2026-05-04
Not valid after
2026-08-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
3F:1A:A9:2D:D9:B0:64:58:CD:02:12:83:E2:4D:DE:B8:80:3C:88:B6:2A:60:23:8E:4D:2C:07:3E:4E:72:4E:2A
SHA1
34:EC:E1:A3:A9:66:20:7D:B8:B3:F0:11:FA:3C:4B:17:5E:BC:8B:98
X509v3 extensions
subjectKeyIdentifier
  • F6:63:17:20:4D:D2:CA:AF:DD:E6:40:AC:3E:73:06:F8:CF:A5:C9:60
authorityKeyIdentifier
  • keyid:00:B5:29:F2:2D:8E:6F:31:E8:9B:4C:AD:78:3E:FA:DC:E9:0C:D1:D2
authorityInfoAccess
  • CA Issuers - URI:http://r12.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r12.c.lencr.org/64.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB:
  • C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD
  • Timestamp : May 4 09:21:45.768 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:1C:1C:D7:C4:E0:A6:03:43:2A:6C:7F:10:
  • 13:00:65:80:6A:82:56:46:9F:0D:E9:28:F7:CF:FC:E3:
  • 91:74:73:05:02:20:18:DD:8F:9F:1E:B9:72:AC:49:33:
  • 4A:22:08:B4:6E:4A:4D:86:44:9D:9A:36:87:59:DB:66:
  • 2E:E9:01:CB:73:F1
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37:
  • 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23
  • Timestamp : May 4 09:21:45.784 2026 GMT
  • Extensions: 00:00:05:00:0D:15:EE:C5
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:6C:54:B0:22:72:13:3A:7A:AB:3E:26:74:
  • F8:C7:13:17:B6:4E:35:85:90:A3:D8:34:A3:04:BD:6A:
  • 69:CB:11:A4:02:21:00:CF:2B:0C:16:1B:5F:88:41:1B:
  • DD:18:EE:26:34:00:E4:C8:3D:71:13:43:49:DF:FB:92:
  • 0E:8B:3A:B0:88:C6:00