SSL-Tools

SSL check results of stichtingdepoolster.nl

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Discover if the mail servers for stichtingdepoolster.nl 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 Thu, 14 Aug 2025 07:25:01 +0000

We can not guarantee a secure connection to the mailservers of stichtingdepoolster.nl!

Please contact the operator of stichtingdepoolster.nl and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/stichtingdepoolster.nl

Servers

Incoming Mails

These servers are responsible for incoming mails to @stichtingdepoolster.nl addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
stichtingdepoolster.nl
83.149.90.13
 10
supported
mail.mediatrend.nl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
relay.transip.nl
2a01:7c8:7c8::29
Results incomplete
20
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
relay.transip.nl
2a01:7c8:7c8::12
Results incomplete
20
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
relay.transip.nl
149.210.149.12
Results incomplete
20
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
relay.transip.nl
149.210.149.29
Results incomplete
20
supported
not checked
DANE
errors
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s

Outgoing Mails

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

Certificates

First seen at:

CN=mail.mediatrend.nl

Certificate chain
  • mail.mediatrend.nl
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
      • R11
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mail.mediatrend.nl
Alternative Names
  • mail.mediatrend.nl
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R11
validity period
Not valid before
2025-07-14
Not valid after
2025-10-12
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
CE:B8:8A:FF:90:91:D8:D1:6F:70:E5:0A:58:8E:97:25:48:E1:A8:0C:3B:80:34:1F:79:22:0C:C8:76:88:A8:7A
SHA1
99:B2:94:7E:3A:74:6A:93:02:F6:59:4D:94:4B:C7:32:F5:FA:69:C1
X509v3 extensions
subjectKeyIdentifier
  • 8B:00:6E:3E:0B:1D:BF:D0:9B:FC:1B:EA:CF:10:87:AB:B8:3E:6C:8A
authorityKeyIdentifier
  • keyid:C5:CF:46:A4:EA:F4:C3:C0:7A:6C:95:C4:2D:B0:5E:92:2F:26:E3:B9
authorityInfoAccess
  • CA Issuers - URI:http://r11.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r11.c.lencr.org/127.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 0D:E1:F2:30:2B:D3:0D:C1:40:62:12:09:EA:55:2E:FC:
  • 47:74:7C:B1:D7:E9:30:EF:0E:42:1E:B4:7E:4E:AA:34
  • Timestamp : Jul 14 22:09:19.367 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:91:45:1D:FB:1D:05:3B:2E:89:DE:FE:
  • D3:A1:B5:00:EF:FC:2C:1E:75:C4:3C:AB:9F:AE:A3:FD:
  • 6D:4B:CE:BF:A2:02:21:00:F1:57:2C:7B:D8:76:3A:E5:
  • CD:0D:2E:EF:B5:FB:3E:A1:00:C6:53:F9:33:42:20:E9:
  • 40:EE:CF:FC:26:D9:04:25
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 12:F1:4E:34:BD:53:72:4C:84:06:19:C3:8F:3F:7A:13:
  • F8:E7:B5:62:87:88:9C:6D:30:05:84:EB:E5:86:26:3A
  • Timestamp : Jul 14 22:09:19.368 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C1:E2:54:8B:D0:2A:DD:E9:36:C9:FF:
  • D1:E9:47:42:AE:E7:CB:66:EC:E0:D2:C4:FB:85:59:AA:
  • 52:B3:32:5C:4C:02:20:47:6D:E2:55:3D:21:4A:5A:29:
  • EB:09:87:13:5C:C9:68:E5:8A:0C:60:87:24:A2:95:53:
  • 42:9D:E7:E7:8C:A3:CD

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.relay.transip.nl
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.relay.transip.nl
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.relay.transip.nl
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—
_25._tcp.relay.transip.nl
  • DANE-EE: Domain Issued Certificate
  • Use subject public key
  • SHA-256 Hash
valid
—