SSL-Tools

SSL check results of smtp.treva.nl

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Discover if the mail servers for smtp.treva.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 Sun, 24 May 2020 20:24:22 +0000

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

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

/mailservers/smtp.treva.nl

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
atog.treva.nl
2a01:7c8:aaae:b2::1
 10
supported
smtp.treva.nl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
atog.treva.nl
77.72.147.112
 10
supported
smtp.treva.nl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
imp.treva.nl
95.211.165.234
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s

Outgoing Mails

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

Certificates

First seen at:

CN=smtp.treva.nl

Certificate chain
  • smtp.treva.nl
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
Subject
Common Name (CN)
  • smtp.treva.nl
Alternative Names
  • smtp.treva.nl
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-04-25
Not valid after
2020-07-24
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
A0:02:46:36:F9:68:2E:5D:3D:63:8B:87:55:07:00:00:3B:32:52:33:43:E8:3E:93:9B:B7:FF:CC:12:93:4B:EB
SHA1
60:C0:1F:3B:25:40:13:2B:FB:37:A9:88:00:2B:92:22:EC:B3:37:1A
X509v3 extensions
subjectKeyIdentifier
  • 9F:B4:C9:86:BC:64:73:7F:64:C6:C6:85:B3:AD:18:F1:FD:BD:B2:49
authorityKeyIdentifier
  • keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
authorityInfoAccess
  • OCSP - URI:http://ocsp.int-x3.letsencrypt.org
  • CA Issuers - URI:http://cert.int-x3.letsencrypt.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 : F0:95:A4:59:F2:00:D1:82:40:10:2D:2F:93:88:8E:AD:
  • 4B:FE:1D:47:E3:99:E1:D0:34:A6:B0:A8:AA:8E:B2:73
  • Timestamp : Apr 25 04:39:57.033 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:EE:91:9F:08:0E:8F:6B:AE:08:36:F6:
  • 29:C8:DC:E3:56:F1:84:C8:6A:87:3D:F6:9F:58:B8:2B:
  • 65:36:89:63:D8:02:20:3D:79:82:F6:7F:29:F8:1E:9B:
  • 3C:E1:73:88:6D:82:E0:7F:3E:86:9A:B6:99:A9:53:B8:
  • C7:0A:CD:B3:87:AA:2A
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 07:B7:5C:1B:E5:7D:68:FF:F1:B0:C6:1D:23:15:C7:BA:
  • E6:57:7C:57:94:B7:6A:EE:BC:61:3A:1A:69:D3:A2:1C
  • Timestamp : Apr 25 04:39:57.068 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:81:0B:1C:44:7B:36:53:F3:FA:1E:34:
  • DD:16:FA:69:32:7B:18:BC:9A:48:82:66:7B:FF:2C:43:
  • 39:07:03:BA:84:02:21:00:EA:38:6C:44:CB:0F:CF:43:
  • D6:66:B4:A9:8B:C2:4E:18:E6:58:F2:9E:03:BD:73:8B:
  • 52:B7:EE:C8:D5:B5:5F:9D