SSL-Tools

SSL check results of gkm.de

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Discover if the mail servers for gkm.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, 15 Jul 2024 12:22:44 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail1.gkm.de
193.16.140.51
 10
supported
mail1.gkm.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
mail2.gkm.de
193.16.140.53
 20
supported
mail2.gkm.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
11 s

Outgoing Mails

We have received emails from these servers with @gkm.de sender addresses. Test mail delivery

Host TLS Version & Cipher
mail1.gkm.de (193.16.140.51)
TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384

Certificates

First seen at:

CN=mail1.gkm.de

Certificate chain
Subject
Common Name (CN)
  • mail1.gkm.de
Alternative Names
  • mail1.gkm.de
  • www.mail1.gkm.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • RapidSSL TLS RSA CA G1
validity period
Not valid before
2024-07-15
Not valid after
2025-08-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
33:5F:85:DD:94:17:54:3B:B5:DC:24:4A:76:6C:23:A3:56:8E:97:F8:5F:EC:2D:CB:B0:2B:02:DE:3A:D1:76:AE
SHA1
9D:80:B3:6A:CB:FD:7F:D8:E1:C3:13:9E:BF:46:0A:3A:7C:24:2C:C3
X509v3 extensions
authorityKeyIdentifier
  • keyid:0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
  • 68:EB:42:28:8E:04:6C:91:60:3B:BA:68:C2:68:84:0A:59:62:A1:77
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.rapidssl.com
  • CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Jul 15 11:32:45.406 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:0A:64:6A:73:9D:AA:8E:2C:0F:72:55:E4:
  • B9:37:71:77:6E:DA:D4:3B:8A:51:F9:E8:A0:6B:53:AA:
  • 7A:42:D9:50:02:21:00:DF:54:BF:3E:EA:42:7B:47:42:
  • 5B:29:8A:E0:3A:77:73:89:C8:F4:8F:26:4B:A8:F5:4F:
  • 7E:67:7B:CC:7B:2A:DA
  • 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 : Jul 15 11:32:45.369 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:DC:E4:54:94:A3:CB:C5:19:9A:93:3E:
  • BB:2E:BD:ED:81:D9:17:C1:7B:FF:D6:02:6E:7D:EC:05:
  • 86:63:9C:2C:66:02:21:00:97:71:4D:5C:17:0D:13:BE:
  • 90:E2:D5:38:8A:9B:62:47:B6:3F:4A:FF:DA:4F:06:47:
  • 5E:14:76:22:12:BE:AC:41
  • 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 : Jul 15 11:32:45.376 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:46:23:74:DF:C3:60:36:84:C6:E6:BE:20:
  • 26:FA:CD:B2:24:60:64:FB:B9:EE:F4:A7:C9:2D:CB:2A:
  • 85:9F:12:67:02:20:45:66:4D:8D:4B:00:03:C7:AB:A9:
  • 89:B9:28:62:B5:EE:29:0E:4F:E8:17:70:54:AA:BF:EC:
  • AB:A9:E8:A0:B9:3E
First seen at:

CN=mail2.gkm.de

Certificate chain
Subject
Common Name (CN)
  • mail2.gkm.de
Alternative Names
  • mail2.gkm.de
  • www.mail2.gkm.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • RapidSSL TLS RSA CA G1
validity period
Not valid before
2024-07-15
Not valid after
2025-08-15
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
95:B3:AA:24:F7:34:3D:0A:E4:AB:3E:39:35:EA:33:1E:80:10:DC:2B:1A:73:1C:C6:63:DB:68:EA:AF:E4:D4:1C
SHA1
02:E2:E0:B2:56:5B:CD:F9:F7:04:27:17:84:CB:1A:6A:EB:66:C3:69
X509v3 extensions
authorityKeyIdentifier
  • keyid:0C:DB:6C:82:49:0F:4A:67:0A:B8:14:EE:7A:C4:48:52:88:EB:56:38
subjectKeyIdentifier
  • 24:8A:85:AB:A5:20:29:9D:BE:96:26:3A:BA:01:90:F1:B5:0A:F1:70
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
authorityInfoAccess
  • OCSP - URI:http://status.rapidssl.com
  • CA Issuers - URI:http://cacerts.rapidssl.com/RapidSSLTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Jul 15 11:35:37.399 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:87:60:F1:E1:9F:9E:61:18:46:F2:1B:
  • 17:C0:16:03:47:F9:C6:DA:79:D5:62:04:06:92:C3:00:
  • A3:02:ED:71:93:02:21:00:CC:F2:5B:8E:D6:33:47:99:
  • E3:B8:B7:0F:99:0C:4F:83:A0:2A:69:42:7C:2B:86:EE:
  • FE:C1:6B:3D:A1:A0:F1:98
  • 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 : Jul 15 11:35:37.404 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EF:24:DD:CC:74:60:3D:37:7A:3B:10:
  • EB:54:C8:C7:C5:BB:27:D0:87:0F:F5:F0:4E:83:9B:7A:
  • E2:CA:48:6A:DD:02:20:1D:C1:B5:34:95:E8:D5:8F:71:
  • BF:FF:0B:81:4F:61:99:C2:C3:95:2A:03:9C:E4:F9:DC:
  • 4C:BC:25:C6:E0:DE:36
  • 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 : Jul 15 11:35:37.418 2024 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EB:2B:24:82:C1:57:1D:29:AE:00:9F:
  • D6:28:AD:30:75:37:32:EF:ED:A0:69:6B:78:C9:44:F2:
  • A1:47:7E:BC:B4:02:20:2A:83:88:9B:53:AF:1C:50:F1:
  • 97:03:B7:30:4E:E0:BC:FE:E4:BF:69:61:CF:75:A6:A6:
  • 1D:F5:95:A1:6E:84:88