SSL-Tools

SSL check results of taomicn.com

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Discover if the mail servers for taomicn.com 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, 02 Jun 2020 00:31:17 +0000

The mailservers of taomicn.com 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 @taomicn.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mxbiz1.qq.com
203.205.232.191
 5
supported
pop.qq.com
DANE
missing
PFS
unsupported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
21 s
mxbiz2.qq.com
203.205.232.191
 10
supported
pop.qq.com
DANE
missing
PFS
unsupported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
20 s

Outgoing Mails

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

Certificates

First seen at:

CN=pop.qq.com,OU=R&D,O=Tencent Technology (Shenzhen) Company Limited,L=Shenzhen,ST=Guangdong,C=CN

Certificate chain
Subject
Country (C)
  • CN
State (ST)
  • Guangdong
Locality (L)
  • Shenzhen
Organization (O)
  • Tencent Technology (Shenzhen) Company Limited
Organizational Unit (OU)
  • R&D
Common Name (CN)
  • pop.qq.com
Alternative Names
  • pop.qq.com
  • dav.qq.com
  • ex.qq.com
  • smtp.qq.com
  • mx1.qq.com
  • imap.qq.com
  • mx2.qq.com
  • mxbiz2.qq.com
  • mxbiz1.qq.com
  • cloudmx.qq.com
  • mx3.qq.com
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • Secure Site CA G2
validity period
Not valid before
2019-10-23
Not valid after
2020-12-22
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
C3:57:31:CF:83:C4:C7:40:F4:50:10:4F:35:8B:05:49:DD:5E:B9:C9:E2:47:61:8E:06:62:9D:7C:23:78:74:02
SHA1
04:48:4D:08:61:A8:8D:6B:A7:98:F0:85:A0:0D:F6:7C:EA:1A:D7:6E
X509v3 extensions
authorityKeyIdentifier
  • keyid:C4:11:7E:88:40:86:C2:41:BF:65:F3:1A:E1:B4:53:40:A3:AB:EC:7D
subjectKeyIdentifier
  • 74:96:AB:27:87:07:4A:99:B1:BC:71:DA:B6:38:39:E6:64:84:B2:95
crlDistributionPoints
  • Full Name:
  • URI:http://crl3.digicert.com/SecureSiteCAG2.crl
  • Full Name:
  • URI:http://crl4.digicert.com/SecureSiteCAG2.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.dcocsp.cn
  • CA Issuers - URI:http://crl.digicert-cn.com/SecureSiteCAG2.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 : Oct 23 02:49:58.347 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:D3:C0:FB:9E:75:FC:59:01:55:F9:F3:
  • 8B:DF:11:95:7C:A3:5F:25:3B:9E:55:A9:E4:EE:4A:4E:
  • B0:49:7D:3D:4B:02:21:00:DF:84:EB:35:71:6F:2B:86:
  • A2:BC:A8:80:33:1E:78:6F:76:AD:49:27:E8:F1:39:9B:
  • EB:17:99:A8:B0:E2:DA:E7
  • 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 : Oct 23 02:49:58.335 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:7B:87:CE:07:B6:E4:1F:F7:48:71:38:8F:
  • 9D:6F:E7:B2:20:7F:56:90:EB:14:D8:63:4E:00:51:81:
  • 7D:AD:35:A1:02:21:00:8E:47:DA:70:42:C6:71:E3:2A:
  • 10:F2:57:DF:76:7F:E6:93:B4:42:D9:61:5D:B4:0C:5C:
  • A6:7B:3A:7A:34:A3:49