SSL-Tools

SSL check results of krustykernel.com

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Discover if the mail servers for krustykernel.com 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 Wed, 25 Jun 2025 18:19:27 +0000

We can not guarantee a secure connection to the mailservers of krustykernel.com!

Please contact the operator of krustykernel.com and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/krustykernel.com

Servers

Incoming Mails

These servers are responsible for incoming mails to @krustykernel.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.krustykernel.com
167.99.51.36
 1
supported
krustykernel.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
5 s
mx1.dnsmadeeasy.com
208.80.120.10
Results incomplete
11
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mx1.dnsmadeeasy.com
208.80.120.11
Results incomplete
11
unsupported
not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mx2.dnsmadeeasy.com
208.94.150.201
Results incomplete
21
supported
*.dnsmadeeasy.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
mx3.dnsmadeeasy.com
208.94.150.197
Results incomplete
31
supported
*.dnsmadeeasy.com
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 @krustykernel.com address so far. Test mail delivery

Certificates

First seen at:

CN=*.dnsmadeeasy.com

Certificate chain
Subject
Common Name (CN)
  • *.dnsmadeeasy.com
Alternative Names
  • *.dnsmadeeasy.com
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2024-03-21
Not valid after
2025-04-21
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
C2:72:04:54:FC:89:88:0C:C2:5D:12:02:90:88:26:58:FC:59:D3:14:23:BF:B6:BA:5F:B6:0A:68:69:B2:6C:F8
SHA1
47:6F:43:4F:9B:C7:11:FB:0A:67:6B:F3:0A:12:0E:AA:15:3A:C4:9C
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • 7B:5F:5C:AC:5F:30:6F:E1:B9:E5:E8:AE:BA:B7:16:E8:CE:41:B8:6F
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 4E:75:A3:27:5C:9A:10:C3:38:5B:6C:D4:DF:3F:52:EB:
  • 1D:F0:E0:8E:1B:8D:69:C0:B1:FA:64:B1:62:9A:39:DF
  • Timestamp : Mar 21 20:02:46.101 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A5:DA:04:4C:43:42:D6:62:71:2F:49:
  • 95:A3:DD:C8:E5:70:F1:2E:C4:18:CF:40:CF:32:EF:3A:
  • 06:2C:B2:AD:F2:02:21:00:CC:FC:03:B2:81:14:E0:EB:
  • 17:A1:AB:EB:F5:AF:E3:D2:EC:24:17:58:A9:38:8F:84:
  • 6E:66:9C:40:41:D0:06:88
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
  • 87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
  • Timestamp : Mar 21 20:02:46.165 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:65:2F:AC:F0:48:FF:B0:5A:DC:7D:94:F2:
  • D4:68:98:BD:6B:16:A5:74:4F:35:C3:2E:2A:CC:38:B7:
  • 37:A8:CC:CA:02:20:2A:37:C6:B3:65:62:28:69:9E:94:
  • B2:80:57:78:AE:B1:92:3C:CF:73:1E:D2:05:B0:9E:3E:
  • 66:75:E1:8E:3E:0F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : E6:D2:31:63:40:77:8C:C1:10:41:06:D7:71:B9:CE:C1:
  • D2:40:F6:96:84:86:FB:BA:87:32:1D:FD:1E:37:8E:50
  • Timestamp : Mar 21 20:02:46.185 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:92:00:47:C0:DD:5B:B6:09:CE:C4:F6:
  • EF:E8:4D:68:29:B0:4F:C8:54:0A:E1:DB:19:62:28:1A:
  • FB:C2:97:AF:D0:02:20:4E:7A:7E:90:36:C8:3D:2A:B8:
  • 01:96:1F:E5:63:21:B3:27:79:E7:92:96:33:78:A9:C0:
  • 81:8D:C2:49:28:1D:FE
First seen at:

CN=krustykernel.com

Certificate chain
  • krustykernel.com (Certificate is self-signed.)
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority
Subject
Common Name (CN)
  • krustykernel.com
Alternative Names
  • krustykernel.com
Issuer

Certificate is self-signed.

validity period
Not valid before
2021-05-06
Not valid after
2031-05-04
Fingerprints
SHA256
B5:FF:D4:D2:43:EF:DF:09:8C:88:DE:70:B5:F9:24:56:F9:D5:9E:0C:76:7F:70:59:7B:12:1E:83:C1:A9:3A:3F
SHA1
0E:66:E4:97:73:1F:0D:2B:E7:32:1E:9B:2E:51:18:C0:ED:C1:FF:A6