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

Report created Thu, 14 Sep 2023 14:43:16 +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
11 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
12 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=mail2.gkm.de

Certificate chain
Subject
Common Name (CN)
  • mail2.gkm.de
Alternative Names
  • 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
2023-07-05
Not valid after
2024-08-04
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
BE:F6:BB:72:B7:EF:52:6D:62:4A:5F:DA:FA:FB:CA:2E:EC:25:F3:E1:C3:42:34:34:B0:E5:E5:FE:F5:3C:81:0A
SHA1
2D:58:42:3E:6F:B5:1B:55:0F:E3:66:9C:F5:15:58:1C:9B:58:7D:F8
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
  • C5:4A:71:77:06:49:35:E3:85:CA:BA:C9:65:B6:CA:EA:07:FF:AB:85
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
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 : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Jul 5 14:06:50.734 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:32:2B:21:24:8D:A1:96:12:F8:38:AC:09:
  • E6:62:10:D3:D9:41:F8:81:F8:E2:7B:10:DB:54:F4:BA:
  • F7:30:5E:7E:02:20:23:BA:05:0C:24:A9:3A:0A:C6:B0:
  • 7E:2E:D6:BD:57:75:D3:7D:DB:48:FC:3C:88:DD:1C:4A:
  • 29:26:DD:70:71:7D
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Jul 5 14:06:50.706 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:97:91:8C:65:C1:9C:10:59:ED:BC:C2:
  • 99:EB:04:98:D2:88:D6:41:4B:6F:74:25:E8:23:E5:92:
  • 90:39:E4:20:EE:02:20:22:29:37:2E:2A:A7:D1:E4:1F:
  • 98:94:59:D6:9E:BC:6A:AE:DF:D6:E8:97:83:0E:FE:2F:
  • 20:77:27:93:DD:5F:51
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DA:B6:BF:6B:3F:B5:B6:22:9F:9B:C2:BB:5C:6B:E8:70:
  • 91:71:6C:BB:51:84:85:34:BD:A4:3D:30:48:D7:FB:AB
  • Timestamp : Jul 5 14:06:50.592 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:0A:B2:9B:4D:68:CF:4C:0B:EF:B5:0A:F2:
  • A5:AE:E4:5B:65:A5:27:92:22:37:2D:4A:3E:07:0B:FA:
  • 42:F5:C2:B4:02:20:1F:A9:03:46:6A:7F:16:6C:E3:2C:
  • 28:01:88:91:E4:31:11:4C:0B:B2:C6:FB:77:0A:B1:3E:
  • 4F:AF:1C:17:82:B7
First seen at:

CN=mail1.gkm.de

Certificate chain
Subject
Common Name (CN)
  • mail1.gkm.de
Alternative Names
  • 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
2023-07-05
Not valid after
2024-08-04
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
68:CA:D3:50:81:92:D3:D1:08:5F:39:BE:A4:50:F1:C4:D3:EA:63:E0:0A:28:32:B3:33:ED:2B:0B:77:98:AD:C1
SHA1
B1:8E:71:42:16:A1:11:33:5E:4C:B9:9D:CB:0E:4A:32:A9:54:1E:AE
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
  • C7:C8:6D:EB:59:C6:11:99:AD:EF:36:4A:B1:E8:5B:5D:2F:43:1F:C4
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.rapidssl.com/RapidSSLTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • CPS: http://www.digicert.com/CPS
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 : EE:CD:D0:64:D5:DB:1A:CE:C5:5C:B7:9D:B4:CD:13:A2:
  • 32:87:46:7C:BC:EC:DE:C3:51:48:59:46:71:1F:B5:9B
  • Timestamp : Jul 5 13:55:19.311 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:20:AB:68:15:4C:37:B6:4F:8A:8A:70:00:
  • 91:7A:33:BE:1E:6C:87:21:EC:B5:B1:65:46:EA:81:0A:
  • 83:C6:72:F3:02:20:71:C9:2F:3E:80:4F:92:D6:8C:48:
  • 7D:64:9D:B3:A5:4A:4F:D6:2D:2B:D8:E5:75:40:88:82:
  • 05:79:A0:33:3A:A5
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Jul 5 13:55:19.399 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:86:EE:20:40:0F:DD:40:A9:D8:45:82:
  • A8:B2:74:12:BB:8B:E1:08:DD:50:57:9E:82:3F:7B:CB:
  • 2B:66:34:31:B3:02:20:10:DA:9A:64:B0:EB:A5:29:1E:
  • F5:90:20:F9:E3:42:7D:63:C9:5F:16:44:6A:C7:BB:92:
  • 7A:CA:A3:5A:E8:D0:1E
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DA:B6:BF:6B:3F:B5:B6:22:9F:9B:C2:BB:5C:6B:E8:70:
  • 91:71:6C:BB:51:84:85:34:BD:A4:3D:30:48:D7:FB:AB
  • Timestamp : Jul 5 13:55:19.282 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A8:76:CE:19:CE:91:D8:27:EB:9B:E7:
  • 4C:7B:AE:E9:16:16:42:CF:12:81:94:5F:36:1F:0F:6A:
  • BD:C8:8A:2F:51:02:21:00:DA:CC:1B:5E:9C:BF:55:75:
  • 1A:FC:C4:DA:95:CD:E4:BF:DF:99:14:3B:A4:A8:2D:10:
  • 4F:72:F0:F6:10:75:90:8F