SSL-Tools

SSL check results of sphereit.net

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Discover if the mail servers for sphereit.net 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 Sat, 26 Sep 2026 00:30:23 +0000

The mailservers of sphereit.net can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @sphereit.net addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
d225256.b.ess.uk.barracudanetworks.com
18.133.136.186
 20
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
d225256.b.ess.uk.barracudanetworks.com
18.133.136.187
 20
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
11 s
d225256.b.ess.uk.barracudanetworks.com
18.133.136.188
 20
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
d225256.a.ess.uk.barracudanetworks.com
18.133.136.186
 30
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
d225256.a.ess.uk.barracudanetworks.com
18.133.136.187
 30
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
12 s
d225256.a.ess.uk.barracudanetworks.com
18.133.136.188
 30
supported
*.a.ess.uk.barracudanetworks.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
11 s

Outgoing Mails

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

Certificates

First seen at:

CN=*.a.ess.uk.barracudanetworks.com,O=Barracuda Networks\, Inc.,L=Campbell,ST=California,C=US

Certificate chain
Subject
Country (C)
  • US
State (ST)
  • California
Locality (L)
  • Campbell
Organization (O)
  • Barracuda Networks, Inc.
Common Name (CN)
  • *.a.ess.uk.barracudanetworks.com
Alternative Names
  • *.a.ess.uk.barracudanetworks.com
  • *.b.ess.uk.barracudanetworks.com
  • *.o.ess.uk.barracudanetworks.com
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Common Name (CN)
  • DigiCert Global G2 TLS RSA SHA256 2020 CA1
validity period
Not valid before
2026-09-23
Not valid after
2027-04-09
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
CB:96:3A:4A:D9:E2:09:67:D3:95:B3:AC:9B:A4:1A:65:6A:72:DF:F6:0E:5D:45:56:64:3A:16:5B:4C:51:E7:B9
SHA1
BA:F6:FA:D7:15:D4:DB:15:7B:6B:6C:75:BB:AB:51:DB:48:C8:DA:47
X509v3 extensions
authorityKeyIdentifier
  • keyid:74:85:80:C0:66:C7:DF:37:DE:CF:BD:29:37:AA:03:1D:BE:ED:CD:17
subjectKeyIdentifier
  • 9C:59:D4:35:49:60:25:47:34:AA:65:33:EB:D0:94:53:1A:A9:F2:DA
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • CPS: http://www.digicert.com/CPS
crlDistributionPoints
  • Full Name:
  • URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
  • Full Name:
  • URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
authorityInfoAccess
  • OCSP - URI:http://ocsp.digicert.com
  • CA Issuers - URI:http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F:
  • AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26
  • Timestamp : Sep 23 15:46:26.233 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:8B:B6:7C:82:A0:7E:5D:18:C0:47:65:
  • B4:E0:D1:FA:44:19:0F:A8:55:08:CF:96:DB:A1:DB:E8:
  • AD:D6:F1:12:FC:02:21:00:AC:80:32:BC:2B:B8:5D:38:
  • 1F:48:A5:60:40:61:97:B8:BF:42:45:3C:66:30:42:15:
  • 7F:FE:4C:4B:70:5F:79:0C
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : D6:D5:8D:A9:D0:17:53:F3:6A:4A:A0:C7:57:49:02:AF:
  • EB:C7:DC:2C:D3:8C:D9:F7:64:C8:0C:89:19:1E:9F:02
  • Timestamp : Sep 23 15:46:26.243 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:46:02:21:00:8A:57:20:69:91:51:07:22:D9:CF:98:
  • BF:81:FC:C9:ED:B3:9C:4C:D7:AD:B9:53:A1:67:CD:0A:
  • C1:98:F0:35:BF:02:21:00:83:6B:FC:FD:A9:D6:A0:BE:
  • 05:5F:5D:9C:B3:EE:6E:DB:C2:7B:54:A6:25:50:5B:12:
  • 62:4B:85:A7:DF:91:85:B8
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD:
  • DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F
  • Timestamp : Sep 23 15:46:26.318 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:9D:F9:2F:76:90:83:01:1B:D1:82:34:
  • E8:13:9D:66:92:FE:FC:35:35:30:FA:83:C8:77:87:E8:
  • 89:C2:BE:CF:D8:02:20:63:9D:CB:1D:E2:BD:94:69:64:
  • EC:27:E9:08:F7:59:9A:C5:8F:3A:07:3F:8B:AF:91:E6:
  • 81:86:54:23:E7:49:5B