SSL check results of sstl.co.uk

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Discover if the mail servers for sstl.co.uk 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

Report created Fri, 08 Nov 2019 12:26:52 +0000

We can not guarantee a secure connection to the mailservers of sstl.co.uk!

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

https://ssl-tools.net/mailservers/sstl.co.uk

Servers

Incoming Mails

These servers are responsible for incoming mails to @sstl.co.uk addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
smtp2.sstl.co.uk
212.87.86.140
5
supported
smtp.sstl.co.uk
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_EXPORT_WITH_RC4_40_MD5
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
smtp.sstl.co.uk
212.87.86.140
10
supported
smtp.sstl.co.uk
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
supported
  • ECDHE_RSA_WITH_RC4_128_SHA
  • SSL_RSA_EXPORT_WITH_RC4_40_MD5
  • SSL_RSA_WITH_RC4_128_SHA
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
12 s
mailgate.sstl.co.uk
212.87.86.140
Results incomplete
50 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 @sstl.co.uk address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.sstl.co.uk,OU=IS Group,O=Surrey Satellite Technology Ltd,L=Guildford,ST=Surrey,C=GB

Certificate chain
  • smtp.sstl.co.uk
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption

      • SSTL-Issuing-CA
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption

          • SSTL-Root-CA (Certificate is self-signed.)
            • remaining
            • 2048 bit
            • sha256WithRSAEncryption
            • Unknown Authority

Subject
Country (C)
  • GB
State (ST)
  • Surrey
Locality (L)
  • Guildford
Organization (O)
  • Surrey Satellite Technology Ltd
Organizational Unit (OU)
  • IS Group
Common Name (CN)
  • smtp.sstl.co.uk
Alternative Names
  • smtp.sstl.co.uk
  • fortimail
  • fortimail.sstl.co.uk
Issuer
Domain Component (DC)
  • uk
  • co
  • sstl
Common Name (CN)
  • SSTL-Issuing-CA
validity period
Not valid before
2019-10-07
Not valid after
2021-10-06
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
FD:2A:F7:9E:A2:C0:0D:97:7B:A1:E4:53:70:A3:50:6B:4F:79:DC:CB:45:1C:60:A4:95:E6:4B:C3:39:99:59:D6
SHA1
42:FC:41:0F:4F:92:EE:54:E3:FF:F5:4D:78:3F:9A:B8:26:DF:31:4E
X509v3 extensions
1_3_6_1_4_1_311_21_7
  • 0..&+.....7...._.......,...v.../. .......m..d...
1_3_6_1_4_1_311_21_10
  • 0.0
  • ..+.......
subjectKeyIdentifier
  • 5E:92:F6:82:22:E3:E2:FC:15:88:A9:0D:73:87:13:59:E2:FA:C7:04
authorityKeyIdentifier
  • keyid:D4:3E:39:0D:F4:54:9B:D8:F6:3A:5E:BF:25:F0:D1:28:54:6B:4A:14
crlDistributionPoints
  • Full Name:
  • URI:http://pki.sstl.co.uk/pki/SSTL-Issuing-CA.crl
authorityInfoAccess
  • CA Issuers - URI:http://pki.sstl.co.uk/pki/SSTLIssuingCA.sstl.co.uk_SSTL-Issuing-CA.crt