SSL-Tools

SSL check results of alavis.cz

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Discover if the mail servers for alavis.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 Tue, 15 Sep 2020 00:10:19 +0000

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

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

/mailservers/alavis.cz

Servers

Incoming Mails

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

Hostname / IP address Priority STARTTLS Certificates Protocol
mail.alavis.cz
195.39.9.242
 10
supported
nas-biopol.synology.me
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
13 s
mail2.alavis.cz
80.92.246.119
Results incomplete
20 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
11 s

Outgoing Mails

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

Certificates

First seen at:

CN=nas-biopol.synology.me

Certificate chain
Subject
Common Name (CN)
  • nas-biopol.synology.me
Alternative Names
  • nas-biopol.synology.me
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • Let's Encrypt Authority X3
validity period
Not valid before
2020-07-22
Not valid after
2020-10-20
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
9F:E4:21:6C:CA:8F:90:4E:1D:17:CF:B4:3A:64:27:1F:30:11:68:64:95:62:4B:AD:43:8E:1F:29:61:4B:2A:65
SHA1
D7:AA:FB:E2:26:BC:37:0F:80:E0:88:85:FA:1B:91:E7:A0:B7:4E:80
X509v3 extensions
subjectKeyIdentifier
  • 3B:2E:77:49:28:8E:5E:68:CA:6E:02:0E:2B:38:B9:67:BE:ED:F3:06
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 : 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 : Jul 22 06:38:03.214 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:D4:1D:41:C0:2A:BF:12:10:46:40:F3:
  • 92:E2:80:F2:E4:87:2B:C4:24:DC:0C:AE:B3:3A:D5:2D:
  • D7:53:8A:4E:5A:02:20:76:3C:83:EB:ED:63:8A:24:B6:
  • 70:6A:FF:FC:64:9B:70:3B:41:6C:66:95:F8:04:B7:C9:
  • 1D:EF:66:7D:E3:2C:1E
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77:
  • 15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13
  • Timestamp : Jul 22 06:38:03.257 2020 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:80:FF:72:A0:28:27:F3:38:E1:BA:0C:
  • 9E:82:56:DB:31:8E:7A:AF:2F:C0:F4:97:03:3C:6A:7F:
  • 20:51:35:70:48:02:21:00:A2:1F:2E:FF:7A:F7:2A:AE:
  • 7E:4B:ED:24:E0:FD:89:71:55:36:AD:19:51:4F:D1:67:
  • 8C:18:24:F1:CD:3C:21:AB