SSL check results of www.offermann-koeln.de

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Discover if the mail servers for www.offermann-koeln.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

Report created Tue, 14 Jan 2020 10:48:05 +0000

We can not guarantee a secure connection to the mailservers of www.offermann-koeln.de!

Please contact the operator of www.offermann-koeln.de and ask him or her to solve this problem. This result stays accessible under the following address:

https://ssl-tools.net/mailservers/www.offermann-koeln.de

Servers

Incoming Mails

These servers are responsible for incoming mails to @www.offermann-koeln.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
www.offermann-koeln.de
5.252.226.157
-
supported
mail.offermann-koeln.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
1 s
www.offermann-koeln.de
2a03:4000:40:da:42c:3cff:fe71:ac45
Results incomplete
- not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s

Outgoing Mails

We have not received any emails from a @www.offermann-koeln.de address so far. Test mail delivery

Certificates

First seen at:

CN=mail.offermann-koeln.de

Certificate chain
Subject
Common Name (CN)
  • mail.offermann-koeln.de
Alternative Names
  • mail.offermann-koeln.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-01-11
Not valid after
2020-04-10
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
4E:92:37:58:B6:D9:49:D8:71:FF:BB:56:17:39:00:61:77:6B:AF:6F:01:EC:72:9B:94:AB:F9:1D:A4:9C:7A:A1
SHA1
98:5F:DB:E5:82:D4:B5:D9:10:22:94:4B:82:EF:7D:25:4C:5B:AA:BA
X509v3 extensions
subjectKeyIdentifier
  • 32:73:0D:26:D1:FB:EC:36:62:F0:1A:6F:07:E5:01:D7:24:E4:73:15
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 : Jan 11 12:07:55.423 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:49:C4:A8:83:E3:63:16:FB:65:4D:97:FD:
  • D6:09:CF:D2:DF:2D:13:48:A8:EC:E4:B2:D7:33:2B:6E:
  • E6:2D:C1:50:02:21:00:F0:6B:26:48:F9:1A:8A:A4:8A:
  • 17:82:04:38:5A:3B:50:72:ED:6D:06:61:33:06:A1:E7:
  • F0:9E:94:A6:70:DD:EA
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : B2:1E:05:CC:8B:A2:CD:8A:20:4E:87:66:F9:2B:B9:8A:
  • 25:20:67:6B:DA:FA:70:E7:B2:49:53:2D:EF:8B:90:5E
  • Timestamp : Jan 11 12:07:55.406 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:A9:15:7F:E3:77:B2:C2:3A:E8:AC:CB:
  • BD:F9:88:9E:F2:6D:34:9B:7C:C4:53:65:4D:77:19:9C:
  • 31:64:75:DD:1C:02:21:00:AA:77:8C:C9:E4:29:A4:3F:
  • 00:47:C0:B3:B0:7E:D1:99:F2:D7:C8:19:9D:4F:7B:D5:
  • CB:5E:E6:44:3A:E3:6B:9F