SSL check results of lemans.prac.os3.nl

NEW You can also bulk check multiple servers.

Discover if the mail servers for lemans.prac.os3.nl 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 Wed, 13 Oct 2021 10:41:03 +0000

We can not guarantee a secure connection to the mailservers of lemans.prac.os3.nl!

Please contact the operator of lemans.prac.os3.nl and ask him or her to solve this problem. This result stays accessible under the following address:

/mailservers/lemans.prac.os3.nl

Servers

Incoming Mails

These servers are responsible for incoming mails to @lemans.prac.os3.nl addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mail1.lemans.prac.os3.nl
2001:610:158:1043:145:100:104:111
Results incomplete
10 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mail1.lemans.prac.os3.nl
2001:610:158:1043:145:100:104:112
Results incomplete
10 not checked
DANE
missing
PFS
not checked
Heartbleed
not checked
Weak ciphers
not checked
1 s
mail1.lemans.prac.os3.nl
145.100.104.112
10
supported
lemans.prac.os3.nl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
4 s
mail2.lemans.prac.os3.nl
145.100.104.111
20
supported
grenoble.studlab.os3.nl
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
6 s

Outgoing Mails

We have not received any emails from a @lemans.prac.os3.nl address so far. Test mail delivery

Certificates

First seen at:

CN=lemans.prac.os3.nl,O=Exim Developers,C=UK

Certificate chain
  • lemans.prac.os3.nl (Certificate is self-signed.)
    • remaining
    • 3072 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority

Subject
Country (C)
  • UK
Organization (O)
  • Exim Developers
Common Name (CN)
  • lemans.prac.os3.nl
Issuer

Certificate is self-signed.

validity period
Not valid before
2021-10-13
Not valid after
2021-10-13
Fingerprints
SHA256
7B:C8:B5:4D:D0:10:0E:F3:DC:38:4D:3F:04:10:B4:CA:70:43:21:3D:E7:D3:0B:00:24:56:9A:6D:D8:C2:49:44
SHA1
B1:B7:99:25:6E:53:31:8B:41:91:32:29:34:31:B4:81:3B:BF:99:91
First seen at:

CN=grenoble.studlab.os3.nl,O=Exim Developers,C=UK

Certificate chain
  • grenoble.studlab.os3.nl (Certificate is self-signed.)
    • remaining
    • 3072 bit
    • sha256WithRSAEncryption
    • Hostname Mismatch
    • Unknown Authority

Subject
Country (C)
  • UK
Organization (O)
  • Exim Developers
Common Name (CN)
  • grenoble.studlab.os3.nl
Issuer

Certificate is self-signed.

validity period
Not valid before
2021-10-13
Not valid after
2021-10-13
Fingerprints
SHA256
5D:38:33:B9:A9:1E:FF:29:48:01:6B:C1:0B:C2:00:AA:1E:FE:14:3B:B7:83:9B:AF:73:16:EC:A3:ED:CA:61:CB
SHA1
14:92:38:53:E3:F4:9B:DE:60:02:3B:4C:50:4E:00:7C:09:88:D2:29