SSL-Tools

SSL check results of umbranetwork.de

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Discover if the mail servers for umbranetwork.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 Sat, 12 Sep 2026 00:30:28 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.umbranetwork.de
91.98.108.168
 10
supported
mail.umbranetwork.de
DANE
valid
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.umbranetwork.de

Certificate chain
  • mail.umbranetwork.de
    • remaining
    • 256 bit
    • ecdsa-with-SHA384
      • YE1
        • remaining
        • 384 bit
        • ecdsa-with-SHA384
          • Root YE
            • remaining
            • 384 bit
            • ecdsa-with-SHA384
              • ISRG Root X2 (Certificate is self-signed.)
                • remaining
                • 384 bit
                • ecdsa-with-SHA384
Subject
Common Name (CN)
  • mail.umbranetwork.de
Alternative Names
  • mail.umbranetwork.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • YE1
validity period
Not valid before
2026-09-06
Not valid after
2026-12-05
This certifcate has been verified for the following usages:
  • Digital Signature
  • TLS Web Server Authentication
Fingerprints
SHA256
E0:CE:37:A0:D6:F2:8C:2C:88:DE:11:01:13:32:16:EE:DD:6F:36:C0:1E:E0:44:11:D8:D9:74:1C:E8:89:52:C0
SHA1
A3:5E:83:EE:53:27:2D:D5:0E:4B:8D:F7:F4:18:C1:E6:3D:6A:88:E0
X509v3 extensions
subjectKeyIdentifier
  • 3C:88:38:59:20:E7:A6:4A:B0:30:D5:51:77:E6:CF:F1:D1:4A:05:AA
authorityKeyIdentifier
  • keyid:BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityInfoAccess
  • CA Issuers - URI:http://ye1.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://ye1.c.lencr.org/98.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9:
  • 82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77
  • Timestamp : Sep 6 11:45:20.617 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:42:0E:E2:59:6C:4F:DC:67:FA:6C:E1:19:
  • 76:2F:90:76:38:9F:86:31:B5:BB:75:65:7B:6D:E7:B7:
  • 5E:38:C3:8E:02:21:00:D3:74:1C:81:55:EB:53:B2:D3:
  • 6A:16:D6:7B:BC:AC:D0:8E:40:51:BD:36:C2:FF:F1:3A:
  • 35:2B:BC:B8:62:A8:71
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0:
  • D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F
  • Timestamp : Sep 6 11:45:20.752 2026 GMT
  • Extensions: 00:00:05:00:26:5B:1E:59
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:0F:E2:A3:B8:F6:3B:75:18:C2:CC:F2:DB:
  • 8E:E0:A2:36:F2:28:46:F7:BB:BD:26:BE:36:27:AF:0A:
  • 3B:F1:30:C2:02:20:1F:54:C5:85:46:F9:3E:05:D6:9A:
  • 67:64:F1:18:89:CF:62:0C:1A:6E:9C:B3:83:42:63:A7:
  • D5:E5:D3:09:5C:79

DANE

DNS-based Authentication of Named Entities (DANE) is a protocol to allow X.509 certificates to be bound to DNS using TLSA records and DNSSEC.

Name Options DNSSEC Matches
_25._tcp.mail.umbranetwork.de
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
valid