SSL-Tools

SSL check results of mailgate.zerties.org

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Discover if the mail servers for mailgate.zerties.org 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

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Report created Fri, 15 Aug 2025 15:59:10 +0000

The mailservers of mailgate.zerties.org can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @mailgate.zerties.org addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mailgate.zerties.org
88.99.136.52
 -
supported
mailgate.zerties.org
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
1 s

Outgoing Mails

We have not received any emails from a @mailgate.zerties.org address so far. Test mail delivery

Certificates

First seen at:

CN=mailgate.zerties.org

Certificate chain
  • mailgate.zerties.org
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R10
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mailgate.zerties.org
Alternative Names
  • list.fablab-rothenburg.de
  • list.zerties.org
  • mailgate.zerties.org
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R10
validity period
Not valid before
2025-06-16
Not valid after
2025-09-14
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
C8:DF:43:63:41:0D:77:C3:41:85:BB:CE:C9:65:E6:61:07:37:F7:CC:F5:E8:79:72:49:66:4F:86:43:EB:FC:AB
SHA1
E4:84:5E:1F:87:97:F6:AC:3C:35:97:4E:4A:59:6C:60:F7:23:E7:5E
X509v3 extensions
subjectKeyIdentifier
  • 3E:A9:07:84:72:5D:D2:15:0E:0D:80:31:3B:4D:77:B7:41:87:45:86
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/38.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 : Jun 16 19:48:23.223 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:48:06:48:CB:48:96:18:76:35:BF:09:7F:
  • D5:EE:81:C7:15:79:8A:EC:99:4C:2D:5C:B6:49:AA:B6:
  • B1:E3:42:A1:02:20:3C:80:70:BF:E1:BE:83:5C:9B:13:
  • C8:39:09:61:19:A3:20:E6:D1:2B:37:A0:89:6E:A6:78:
  • D3:6B:4C:37:17:E2
  • 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 : Jun 16 19:48:23.232 2025 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:32:33:15:23:F6:50:D9:CC:15:B9:F5:0A:
  • B7:88:BC:18:F3:FA:1E:15:14:05:29:A4:61:DE:AC:38:
  • 10:C9:24:73:02:21:00:9F:E2:C5:6B:D1:A8:C3:89:EE:
  • 45:98:33:2A:9E:7D:7C:DF:F2:82:76:13:8A:06:6C:3D:
  • C0:3B:78:00:02:71:00