SSL check results of netcup.de

NEW You can also bulk check multiple servers.

Discover if the mail servers for netcup.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 Mon, 11 Dec 2023 15:34:24 +0000

No connection to the mailservers of netcup.de could be established.

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.netcup.net
2a03:4000:0:1::e1aa
Results incomplete
10
supported
*.netcup.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
smtp.netcup.net
46.38.225.170
Results incomplete
10
supported
*.netcup.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
backupmx-fra1.netcup.net
2a03:4001:0:104::29
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s
backupmx-fra1.netcup.net
188.68.63.41
Results incomplete
20
supported
*.netcup.net
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 @netcup.de address so far. Test mail delivery

Certificates

First seen at:

CN=*.netcup.net

Certificate chain
Subject
Common Name (CN)
  • *.netcup.net
Alternative Names
  • *.netcup.net
  • netcup.net
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
2023-10-10
Not valid after
2024-10-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
65:D7:69:84:66:65:20:D8:A9:0D:5C:48:4D:DD:DB:24:1E:2E:A7:36:14:B2:57:AF:BE:D2:CC:4B:A8:17:F7:31
SHA1
C8:37:8C:00:35:EC:40:5A:25:39:D0:0E:60:16:73:43:62:89:CF:73
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
  • EA:D7:B6:20:A8:5D:53:51:0D:5B:24:EB:07:67:13:21:0A:BD:2F:E4
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 : 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 : Oct 10 14:59:11.044 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:63:F4:A2:76:F7:98:47:9C:BF:32:1A:64:
  • 87:61:83:62:10:FB:36:FB:28:D9:C2:FA:2C:19:1B:3D:
  • 7A:4B:45:C1:02:21:00:AF:7D:26:2F:E1:41:9F:BA:38:
  • AC:39:8F:70:01:14:5C:6F:41:B8:0F:90:17:68:9C:0D:
  • 87:42:DC:0C:B7:81:1B
  • 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 : Oct 10 14:59:11.042 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:36:3F:31:35:51:F2:5C:48:6F:D3:03:61:
  • D5:0D:BB:63:2A:24:E1:C3:F0:CF:CC:51:80:9D:CE:DF:
  • BD:AB:33:32:02:20:68:AA:61:BF:7B:0A:F3:6A:DF:EB:
  • 00:7B:00:BC:95:6D:AA:09:AA:15:5E:D0:26:8D:5F:65:
  • C0:A3:2F:B7:7E:39
  • 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 : Oct 10 14:59:11.002 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:0A:A9:B1:45:37:6F:84:15:10:2E:ED:2D:
  • 15:2F:02:AE:15:97:7D:E8:71:0A:36:43:EA:13:E3:E0:
  • 92:8E:CD:47:02:21:00:B6:F1:F0:FA:19:0B:A9:41:C2:
  • 82:50:48:05:FA:C2:2F:F0:D3:15:6F:8C:54:E2:DC:60:
  • 15:92:2F:CE:05:9B:77