SSL check results of itbremen.de

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Discover if the mail servers for itbremen.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 Fri, 29 May 2020 00:37:24 +0000

The mailservers of itbremen.de can be reached through an encrypted connection.

However, we found problems that may affect the security.

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
itbremen.de
212.83.35.37
20
supported
itbmail.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s

Outgoing Mails

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

Certificates

First seen at:

CN=itbmail.de

Certificate chain
  • itbmail.de
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch

Subject
Common Name (CN)
  • itbmail.de
Alternative Names
  • *.itbmail.de
  • itbmail.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-04-13
Not valid after
2020-07-12
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
15:4F:7C:15:EA:2A:7E:D9:27:02:77:48:41:21:CD:1E:FC:33:B3:06:F8:43:9E:55:38:40:43:36:6B:E4:2A:9C
SHA1
7D:16:99:70:81:F9:66:DD:7A:A6:0E:B1:95:A4:01:A2:60:DA:91:4F
X509v3 extensions
subjectKeyIdentifier
  • F3:54:EC:CB:78:4D:EE:B3:5A:F6:8D:73:0F:4E:0E:8B:59:3A:87:F0
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 : 5E:A7:73:F9:DF:56:C0:E7:B5:36:48:7D:D0:49:E0:32:
  • 7A:91:9A:0C:84:A1:12:12:84:18:75:96:81:71:45:58
  • Timestamp : Apr 13 14:32:55.845 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:7D:E2:62:88:B9:AE:6F:88:07:36:A4:A6:
  • 69:CF:E0:AF:21:1C:62:86:B8:21:55:58:07:67:9B:1E:
  • 44:11:9F:66:02:20:2E:49:C6:BB:68:58:5A:7E:54:82:
  • 3F:D5:A7:78:56:D1:94:EC:79:21:BD:C5:2D:F9:45:49:
  • 27:10:1B:18:BD:79
  • 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 13 14:32:55.870 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:97:21:74:60:EB:6C:74:2C:F1:26:EC:
  • CC:4E:2B:1F:8A:86:F9:20:FD:80:6E:15:A0:C9:C0:62:
  • 12:EE:3A:25:68:02:21:00:C2:82:2F:02:BB:1F:E3:09:
  • 34:95:8D:92:0D:04:2A:84:5A:5B:73:EE:81:F4:48:77:
  • A6:CE:E4:8E:98:43:BA:FB