SSL-Tools

SSL check results of yttrium.de

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Discover if the mail servers for yttrium.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 Fri, 07 Nov 2025 15:35:22 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
haja.srvsvc.net
95.216.24.7
 5
supported
haja.srvsvc.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s

Outgoing Mails

We have not received any emails from a @yttrium.de address so far. Test mail delivery

Certificates

First seen at:

CN=haja.srvsvc.net

Certificate chain
  • haja.srvsvc.net
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • haja.srvsvc.net
Alternative Names
  • haja.srvsvc.net
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2025-10-02
Not valid after
2025-12-31
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
A2:09:19:D0:74:0B:07:F9:EF:D6:5A:D7:E1:CA:34:CD:98:DC:6F:61:F2:8F:53:CA:75:09:C8:F8:2E:B7:BE:45
SHA1
62:7F:2E:D1:1A:37:29:ED:F8:FF:B9:FD:0E:18:51:C3:1D:6A:B2:23
X509v3 extensions
subjectKeyIdentifier
  • D2:69:07:32:A1:CB:48:1F:16:30:88:FD:CC:5B:DD:1C:8E:91:1F:E6
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/113.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CC:FB:0F:6A:85:71:09:65:FE:95:9B:53:CE:E9:B2:7C:
  • 22:E9:85:5C:0D:97:8D:B6:A9:7E:54:C0:FE:4C:0D:B0
  • Timestamp : Oct 3 00:07:08.005 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:C6:05:A6:66:3E:52:5A:B5:55:9C:8C:
  • 3F:6B:A3:EB:FA:09:D3:9B:52:82:F1:E4:A8:E4:59:54:
  • EA:5C:77:83:61:02:21:00:F6:18:3D:E8:13:29:97:DB:
  • A5:3D:9A:D2:DA:D6:24:D5:6C:B7:57:E4:78:72:76:D6:
  • 72:02:98:7F:74:AB:AD:9F
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : DD:DC:CA:34:95:D7:E1:16:05:E7:95:32:FA:C7:9F:F8:
  • 3D:1C:50:DF:DB:00:3A:14:12:76:0A:2C:AC:BB:C8:2A
  • Timestamp : Oct 3 00:07:08.040 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C5:CF:89:3D:AC:F7:07:64:24:1F:54:
  • 44:63:35:1A:29:AF:EB:F3:5D:91:CF:87:6C:8F:23:CB:
  • FE:5F:54:97:F1:02:20:4D:B8:B7:18:00:2C:35:7E:F7:
  • 77:15:BA:A7:4A:06:12:42:39:80:45:BA:9B:FF:D1:03:
  • 20:E7:D5:0B:1B:99:CA