SSL-Tools

SSL check results of dos4gw.site

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Discover if the mail servers for dos4gw.site 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, 16 Aug 2025 00:30:07 +0000

The mailservers of dos4gw.site can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @dos4gw.site addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.dos4gw.site
46.36.219.199
 10
supported
dos4gw.site
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
3 s

Outgoing Mails

We have not received any emails from a @dos4gw.site address so far. Test mail delivery

Certificates

First seen at:

CN=dos4gw.site

Certificate chain
  • dos4gw.site
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • dos4gw.site
Alternative Names
  • dos4gw.site
  • mail.dos4gw.site
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-08-15
Not valid after
2025-11-13
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
51:BE:D0:9B:B6:27:DA:FF:48:DF:7D:27:E4:EC:82:9A:8D:59:A2:CD:2B:4F:10:58:A4:9C:2A:BD:5E:45:C9:5A
SHA1
F5:15:70:A0:2B:7A:F5:19:A2:57:22:75:0A:F5:48:B6:A3:16:48:F6
X509v3 extensions
subjectKeyIdentifier
  • A1:E0:53:A3:AB:8A:FC:92:43:C8:77:FA:2B:99:6F:E3:11:86:73:47
authorityKeyIdentifier
  • keyid:BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
authorityInfoAccess
  • CA Issuers - URI:http://r10.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r10.c.lencr.org/27.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : A4:42:C5:06:49:60:61:54:8F:0F:D4:EA:9C:FB:7A:2D:
  • 26:45:4D:87:A9:7F:2F:DF:45:59:F6:27:4F:3A:84:54
  • Timestamp : Aug 15 09:31:17.142 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:C4:D1:BF:BD:B5:80:FC:91:E1:3C:62:
  • 52:79:58:DF:EA:40:EC:C0:5E:7F:15:09:FF:4E:17:C8:
  • 96:8F:4E:05:15:02:21:00:98:37:41:61:4E:9F:32:D9:
  • 46:C8:F5:D7:AE:9C:38:63:91:68:83:33:0F:71:A2:1E:
  • 6D:A9:37:90:A5:35:D7:42
  • 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 : Aug 15 09:31:17.142 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:6A:7E:E4:FF:F3:A9:FC:2E:EF:8B:9D:2A:
  • BD:5E:94:90:3A:74:EF:7F:6B:B6:AC:A8:8A:BF:67:9F:
  • 4C:EB:BE:BA:02:20:17:5B:B0:50:46:3B:97:82:71:80:
  • DF:98:E9:C3:BF:E6:FE:11:06:66:C5:49:0C:6C:61:E1:
  • EE:08:FB:6D:2F:90