SSL-Tools

SSL check results of mail.o2online.de

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Discover if the mail servers for mail.o2online.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

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Report created Sat, 06 Jun 2020 05:01:11 +0000

The mailservers of mail.o2online.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 @mail.o2online.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.o2online.de
91.136.8.190
 -
supported
mailadmin.o2online.de
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
20 s

Outgoing Mails

We have not received any emails from a @mail.o2online.de address so far. Test mail delivery

Certificates

First seen at:

CN=mailadmin.o2online.de,O=Telefonica Germany GmbH und Co. OHG,L=Munich,C=DE

Certificate chain
Subject
Country (C)
  • DE
Locality (L)
  • Munich
Organization (O)
  • Telefonica Germany GmbH und Co. OHG
Common Name (CN)
  • mailadmin.o2online.de
Alternative Names
  • mail.o2online.de
  • setmail.o2online.de
  • gomail.o2online.de
  • smtp.o2online.de
  • imap4.o2online.de
  • pop.o2online.de
  • pop3.o2online.de
  • sync.o2online.de
  • mailadmin.o2online.de
  • imap.o2online.de
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Common Name (CN)
  • DigiCert SHA2 Secure Server CA
validity period
Not valid before
2019-11-04
Not valid after
2021-10-25
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
CC:6F:3A:EE:61:30:D6:40:0B:F8:61:A4:73:0D:1E:A2:ED:D8:14:85:66:2E:89:31:0A:38:54:BD:C2:22:71:AF
SHA1
EF:87:1D:4E:1E:EC:71:84:6F:BF:9A:20:1B:1B:32:33:CF:56:33:49
X509v3 extensions
authorityKeyIdentifier
  • keyid:0F:80:61:1C:82:31:61:D5:2F:28:E7:8D:46:38:B4:2C:E1:C6:D9:E2
subjectKeyIdentifier
  • 42:A2:83:56:41:C7:44:ED:4D:07:AE:C9:0B:FD:B2:47:38:A8:8C:F6
crlDistributionPoints
  • Full Name:
  • URI:http://crl3.digicert.com/ssca-sha2-g6.crl
  • Full Name:
  • URI:http://crl4.digicert.com/ssca-sha2-g6.crl
certificatePolicies
  • Policy: 2.16.840.1.114412.1.1
  • CPS: https://www.digicert.com/CPS
  • Policy: 2.23.140.1.2.2
authorityInfoAccess
  • OCSP - URI:http://ocsp.digicert.com
  • CA Issuers - URI:http://cacerts.digicert.com/DigiCertSHA2SecureServerCA.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : BB:D9:DF:BC:1F:8A:71:B5:93:94:23:97:AA:92:7B:47:
  • 38:57:95:0A:AB:52:E8:1A:90:96:64:36:8E:1E:D1:85
  • Timestamp : Nov 4 08:34:02.378 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:52:18:91:CD:E3:38:6D:DD:71:38:F5:68:
  • 90:2F:79:40:16:78:67:3F:E6:C9:C9:4B:64:2E:8A:E1:
  • 3F:B7:3E:04:02:20:55:28:69:DA:7F:ED:99:7B:E2:6C:
  • 3E:A3:14:69:E1:94:FF:36:97:4B:E1:0C:00:D1:20:B9:
  • 8E:38:BC:0C:BE:A0
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 87:75:BF:E7:59:7C:F8:8C:43:99:5F:BD:F3:6E:FF:56:
  • 8D:47:56:36:FF:4A:B5:60:C1:B4:EA:FF:5E:A0:83:0F
  • Timestamp : Nov 4 08:34:02.442 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:81:D1:F8:24:62:D7:E4:71:54:63:F3:
  • F3:2E:CC:ED:69:CF:E8:13:F4:C3:05:8D:33:2D:A6:E0:
  • 2D:B5:B9:00:57:02:21:00:8A:18:B2:B8:8A:3F:A3:46:
  • 17:ED:27:44:BE:9D:F3:BB:F4:BF:92:8D:AE:EB:B7:59:
  • 9E:27:86:59:84:AB:F6:3C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 44:94:65:2E:B0:EE:CE:AF:C4:40:07:D8:A8:FE:28:C0:
  • DA:E6:82:BE:D8:CB:31:B5:3F:D3:33:96:B5:B6:81:A8
  • Timestamp : Nov 4 08:34:02.200 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:DB:35:03:19:FA:CF:E4:25:66:54:F3:
  • 66:BB:A9:E0:AF:5C:16:6B:E5:5A:2C:19:C5:15:87:33:
  • FD:FF:8B:F6:D4:02:20:43:0F:1D:68:32:C9:7D:E9:71:
  • D5:85:D1:11:2B:90:A7:0A:A3:4A:28:61:73:80:88:4C:
  • AC:CB:94:32:95:45:D5