SSL-Tools

SSL check results of smtp.udag.de

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Discover if the mail servers for smtp.udag.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 Tue, 10 Mar 2026 21:03:43 +0000

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

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp.udag.de
62.146.106.15
 -
supported
smtp.udag.de
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 @smtp.udag.de address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.udag.de

Certificate chain
  • smtp.udag.de
    • remaining
    • 4096 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • smtp.udag.de
Alternative Names
  • smtp.udag.de
  • smtps.udag.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2026-03-08
Not valid after
2026-06-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
47:D2:D6:FF:E1:10:B9:70:54:BF:5A:AB:14:3E:B5:FF:45:D3:B6:07:36:FE:C2:9F:D1:8E:33:C8:CC:8F:8E:CE
SHA1
1E:77:F9:7F:32:77:69:30:00:4E:67:63:3C:75:FE:0D:BC:67:78:68
X509v3 extensions
subjectKeyIdentifier
  • 86:61:22:D0:87:47:CF:6D:3D:04:BF:93:06:81:2D:54:44:A6:CA:8B
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/25.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 49:9C:9B:69:DE:1D:7C:EC:FC:36:DE:CD:87:64:A6:B8:
  • 5B:AF:0A:87:80:19:D1:55:52:FB:E9:EB:29:DD:F8:C3
  • Timestamp : Mar 8 23:01:18.329 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:61:E9:B1:72:5C:BE:76:8B:D2:91:05:15:
  • 8F:03:51:E9:2E:13:E5:46:8A:72:33:E5:04:1C:7F:44:
  • BB:C2:B9:AB:02:20:73:58:6C:0E:90:6E:9B:A0:DF:CC:
  • D5:18:51:05:F2:C9:8C:55:48:FA:9D:1E:55:42:0D:6A:
  • 7B:AB:29:46:1C:B6
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 96:97:64:BF:55:58:97:AD:F7:43:87:68:37:08:42:77:
  • E9:F0:3A:D5:F6:A4:F3:36:6E:46:A4:3F:0F:CA:A9:C6
  • Timestamp : Mar 8 23:01:18.392 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:84:68:A6:48:E6:A6:C3:3F:35:6A:6B:
  • 2B:34:FA:C5:86:DC:14:46:19:AA:D8:7D:40:8A:88:BC:
  • 64:49:54:CB:C1:02:21:00:DB:61:9C:B1:2D:8C:83:40:
  • 0B:DE:C2:47:C7:3E:CD:E8:FE:56:67:A4:97:E0:71:5A:
  • FA:91:B7:A6:82:54:B1:2B