SSL check results of smtp.client-webspace.de

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Discover if the mail servers for smtp.client-webspace.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 Wed, 07 Apr 2021 08:49:20 +0000

We can not guarantee a secure connection to the mailservers of smtp.client-webspace.de!

Please contact the operator of smtp.client-webspace.de and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/smtp.client-webspace.de

Servers

Incoming Mails

These servers are responsible for incoming mails to @smtp.client-webspace.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.client-webspace.de
148.251.83.5
-
supported
smtp.client-webspace.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_EXPORT_WITH_RC4_40_MD5
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
smtp.client-webspace.de
2a01:4f8:202:5303::2
Results incomplete
- not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

We have not received any emails from a @smtp.client-webspace.de address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.client-webspace.de

Certificate chain
  • smtp.client-webspace.de
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption

      • R3
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption

          • DST Root CA X3 (Certificate is self-signed.)
            • remaining
            • 2048 bit
            • sha1WithRSAEncryption

Subject
Common Name (CN)
  • smtp.client-webspace.de
Alternative Names
  • smtp.client-webspace.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R3
validity period
Not valid before
2021-03-22
Not valid after
2021-06-20
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
CA:16:E9:B5:02:BE:3F:ED:CA:D7:30:65:5A:E7:B1:11:73:44:F4:AC:14:19:A6:A0:C2:74:D4:1C:7A:BC:57:D4
SHA1
5A:47:11:1B:42:09:01:E7:CF:27:86:E3:BB:7C:F6:2B:E1:16:56:7D
X509v3 extensions
subjectKeyIdentifier
  • 94:C8:30:A9:55:42:D9:78:51:E9:AF:53:4A:2C:DB:B4:92:16:98:D5
authorityKeyIdentifier
  • keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
authorityInfoAccess
  • OCSP - URI:http://r3.o.lencr.org
  • CA Issuers - URI:http://r3.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
  • Policy: 1.3.6.1.4.1.44947.1.1.1
  • CPS: http://cps.letsencrypt.org
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 94:20:BC:1E:8E:D5:8D:6C:88:73:1F:82:8B:22:2C:0D:
  • D1:DA:4D:5E:6C:4F:94:3D:61:DB:4E:2F:58:4D:A2:C2
  • Timestamp : Mar 22 23:10:41.806 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:77:5D:2E:82:39:B9:6C:A2:81:AD:BF:E5:
  • E6:3D:87:B6:44:69:9D:A4:8C:A0:52:20:39:6C:BB:6B:
  • 20:5D:2B:90:02:21:00:90:94:3D:EC:1E:DA:FB:A5:F3:
  • 10:94:FB:3B:4D:DC:94:59:06:14:A5:98:23:A3:5C:37:
  • 21:35:F1:4B:28:DF:AA
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 7D:3E:F2:F8:8F:FF:88:55:68:24:C2:C0:CA:9E:52:89:
  • 79:2B:C5:0E:78:09:7F:2E:6A:97:68:99:7E:22:F0:D7
  • Timestamp : Mar 22 23:10:41.858 2021 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:B6:7D:40:F1:B1:2D:23:60:D6:02:13:
  • B4:DB:3F:8C:59:B9:36:BE:39:83:0E:A7:21:8F:05:3E:
  • 7F:9A:37:E3:74:02:21:00:B6:BE:BA:F6:5F:EC:72:CB:
  • 40:F5:CE:5B:85:4E:7C:A4:2F:56:F8:26:E5:DE:23:5E:
  • 57:4B:C2:FC:45:72:CF:47