SSL-Tools

SSL check results of lukaschristmann.de

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Discover if the mail servers for lukaschristmann.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 Tue, 15 Jul 2025 17:38:17 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.lukaschristmann.de
2001:1608:6:4b:1:cc01:37b0:7047
 30
supported
imap.lukaschristmann.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
8 s
mail.lukaschristmann.de
84.200.133.74
 30
supported
imap.lukaschristmann.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
7 s
ultr0n.lukaschristmann.de
2a01:4f8:c17:e19d::1
 150
supported
ultr0n.lukaschristmann.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
8 s
ultr0n.lukaschristmann.de
49.13.5.223
 150
supported
ultr0n.lukaschristmann.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
4 s

Outgoing Mails

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

Certificates

First seen at:

CN=imap.lukaschristmann.de

Certificate chain
  • imap.lukaschristmann.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • imap.lukaschristmann.de
Alternative Names
  • imap.lukaschristmann.de
  • mail.lukaschristmann.de
  • smtp.lukaschristmann.de
  • vmailmanage.lukaschristmann.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-06-07
Not valid after
2025-09-05
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
06:13:B3:35:4E:2B:33:A1:B9:5A:DF:C2:7A:E1:1E:49:75:8C:6F:EE:A5:FF:7C:C3:85:61:DA:E8:3D:33:7C:B2
SHA1
34:3D:C9:FD:EE:43:5A:48:0C:45:62:5B:79:07:8D:8C:F6:A1:97:69
X509v3 extensions
subjectKeyIdentifier
  • 0F:44:F7:67:1C:D4:FC:67:52:D7:78:57:BA:34:56:9C:28:45:A6:26
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/1.crl
ct_precert_scts
  • 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 8 00:47:43.895 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:74:4F:85:05:CF:24:79:D2:56:EC:31:1B:
  • B2:46:67:CA:A4:1C:DD:8A:14:40:5F:C0:D5:FA:83:78:
  • 9D:ED:67:60:02:21:00:B9:DF:E9:9C:FA:67:ED:F0:53:
  • D4:7F:D5:75:72:C9:76:DB:F2:70:F9:8E:91:24:FF:9E:
  • 45:27:26:D8:7E:6B:D2
  • 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 8 00:47:45.860 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:7B:9E:FC:28:BE:1C:D9:BE:A9:8A:DC:E3:
  • C2:0D:6E:41:41:CD:D7:FE:46:16:04:97:76:B6:A4:95:
  • E2:EB:F4:B4:02:20:44:5B:44:52:00:31:87:23:04:2E:
  • 94:F3:A4:7F:3A:42:30:A6:98:57:D0:B4:3C:B5:E8:6C:
  • 33:68:A4:1C:DC:9E
First seen at:

CN=ultr0n.lukaschristmann.de

Certificate chain
  • ultr0n.lukaschristmann.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • E5
        • remaining
        • 384 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • ultr0n.lukaschristmann.de
Alternative Names
  • ultr0n.lukaschristmann.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • E5
validity period
Not valid before
2025-05-29
Not valid after
2025-08-27
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
EB:66:9B:8A:1B:13:01:DB:A1:4F:C9:A4:B7:69:8D:2D:8C:C4:C3:8A:C7:C1:2C:24:5C:D3:CB:34:E6:B9:D2:FC
SHA1
61:79:4E:CD:47:9B:A1:0B:C8:36:3B:DB:EA:89:D7:BC:A8:10:72:FC
X509v3 extensions
subjectKeyIdentifier
  • 46:CC:E6:6D:83:ED:CB:A3:F8:39:93:DC:71:53:E3:C9:85:25:F8:5A
authorityKeyIdentifier
  • keyid:9F:2B:5F:CF:3C:21:4F:9D:04:B7:ED:2B:2C:C4:C6:70:8B:D2:D7:0D
authorityInfoAccess
  • CA Issuers - URI:http://e5.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://e5.c.lencr.org/2.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : May 29 02:45:05.003 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:6A:C2:D6:FC:86:D4:10:FD:6F:88:E4:6D:
  • 6A:DD:AA:68:D3:3C:BB:CD:66:7B:F0:88:21:50:83:86:
  • 6E:C9:F0:BE:02:20:21:77:14:4E:48:68:71:FB:CD:AD:
  • 32:53:AE:6F:92:BB:6D:FD:EA:3F:BB:EB:98:64:D3:C2:
  • 8E:D4:FA:44:9D:7E
  • 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 : May 29 02:45:09.023 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D4:11:27:17:23:E5:BD:D8:BB:BE:A7:
  • 28:5C:E3:CE:1F:69:D2:35:2D:5C:BA:4E:0E:A7:6E:D9:
  • B6:94:FD:DE:4D:02:21:00:A2:13:BC:23:15:6E:04:F6:
  • D9:5B:12:23:6C:A8:89:5E:75:36:21:18:D4:34:85:DE:
  • 11:A5:59:76:67:05:E7:02