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SSL check results of aitcom.cz

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Discover if the mail servers for aitcom.cz 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 Fri, 12 Jun 2020 00:33:20 +0000

We can not guarantee a secure connection to the mailservers of aitcom.cz!

Please contact the operator of aitcom.cz and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/aitcom.cz

Servers

Incoming Mails

These servers are responsible for incoming mails to @aitcom.cz addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
firma.aitcom.cz
194.213.202.180
 10
supported
aitcom.cz
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
bmx1.nux.cz
89.233.139.100
 40
supported
mail.nux.cz
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
2 s
bmx2.nux.cz
149.56.46.205
Results incomplete
50
unsupported
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 @aitcom.cz address so far. Test mail delivery

Certificates

First seen at:

CN=aitcom.cz

Certificate chain
  • aitcom.cz
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Expired
Subject
Common Name (CN)
  • aitcom.cz
Alternative Names
  • *.aitcom.cz
  • aitcom.cz
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2019-06-04
Not valid after
2019-09-02
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
01:01:15:E9:5C:0B:26:BB:58:A1:B4:01:00:7A:7C:E4:64:D1:0F:FD:E8:CB:B9:D1:A8:E2:89:85:F6:CF:0B:72
SHA1
80:C2:30:36:10:8E:28:16:A6:5E:9A:DE:93:D8:1B:60:5F:71:E3:C2
X509v3 extensions
subjectKeyIdentifier
  • F1:05:E5:3F:EF:30:17:60:97:BE:8A:B5:57:06:C9:1C:0E:19:F7:0A
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 : E2:69:4B:AE:26:E8:E9:40:09:E8:86:1B:B6:3B:83:D4:
  • 3E:E7:FE:74:88:FB:A4:8F:28:93:01:9D:DD:F1:DB:FE
  • Timestamp : Jun 4 01:16:58.225 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:55:85:B3:27:E2:8A:52:2B:E1:F1:90:C3:
  • 97:F6:8E:0F:91:D4:CB:A2:D7:18:5A:59:18:7F:59:48:
  • 99:40:C5:7B:02:20:3F:9B:23:34:2D:0E:ED:39:DB:34:
  • 39:B7:C6:0E:E0:B1:5D:98:EE:46:73:D0:D1:F5:0B:04:
  • 54:63:D8:87:74:C3
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 63:F2:DB:CD:E8:3B:CC:2C:CF:0B:72:84:27:57:6B:33:
  • A4:8D:61:77:8F:BD:75:A6:38:B1:C7:68:54:4B:D8:8D
  • Timestamp : Jun 4 01:16:58.212 2019 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:F0:41:19:EA:95:9A:41:59:6A:1E:4C:
  • A0:48:7F:A7:6B:B9:A5:D8:D0:AC:F3:31:08:86:40:00:
  • 46:69:74:32:DA:02:20:4B:3D:C0:DC:19:B0:29:B8:73:
  • 67:3B:53:6A:69:B6:87:32:68:A3:54:5A:50:8E:F4:AC:
  • F1:94:98:A2:45:09:33
First seen at:

CN=mail.nux.cz

Certificate chain
  • mail.nux.cz
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
Subject
Common Name (CN)
  • mail.nux.cz
Alternative Names
  • mail.nux.cz
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-05-05
Not valid after
2020-08-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
3F:C1:5F:5E:86:42:ED:9A:9B:F3:98:C7:53:BA:5C:20:1E:85:68:78:C3:C6:B9:5E:43:53:79:3B:89:AC:47:48
SHA1
9F:38:A6:55:59:9B:4D:98:CA:7B:F3:B7:93:C6:20:C9:B6:60:B6:87
X509v3 extensions
subjectKeyIdentifier
  • B7:6A:93:E2:17:B5:90:38:33:B7:39:E0:BD:2B:0A:1E:1F:86:A3:66
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 : May 5 17:30:24.989 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:E0:06:4E:5C:C7:86:26:45:8D:6C:15:
  • 84:A6:1F:B7:90:C3:4C:7C:EB:CE:1D:41:AB:0F:A9:B0:
  • 8D:BF:2B:B8:44:02:20:24:2E:D9:C6:3D:F5:B0:C6:B0:
  • A2:0D:E0:22:7A:90:B6:8D:E7:95:BA:8C:DD:71:8F:5E:
  • 08:4A:2D:2B:64:10:7D
  • 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 : May 5 17:30:24.971 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:45:3B:ED:79:53:2B:D3:A4:FB:B7:A2:C0:
  • 28:60:16:64:17:90:72:43:55:C3:F6:F0:79:61:A8:71:
  • 56:11:97:59:02:21:00:E8:66:A1:4B:FF:9B:71:2B:E6:
  • 4F:0F:51:B2:6A:E9:CA:D9:D2:DA:99:F7:30:AC:0F:73:
  • CE:EE:DA:B8:3C:97:D1