SSL-Tools

SSL check results of imap.exasec.de

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Discover if the mail servers for imap.exasec.de 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 Sun, 07 Jun 2026 00:30:52 +0000

We can not guarantee a secure connection to the mailservers of imap.exasec.de!

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

/mailservers/imap.exasec.de

Servers

Incoming Mails

These servers are responsible for incoming mails to @imap.exasec.de addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
imap.exasec.de
116.203.165.68
 -
supported
mx0.exasec.net
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • SSLv3
7 s
imap.exasec.de
2a01:4f8:1c0c:8308::
Results incomplete
-
unsupported
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 @imap.exasec.de address so far. Test mail delivery

Certificates

First seen at:

CN=mx0.exasec.net

Certificate chain
  • mx0.exasec.net
    • remaining
    • 2048 bit
    • sha256WithRSAEncryption
      • R13
        • remaining
        • 2048 bit
        • sha256WithRSAEncryption
          • ISRG Root X1 (Certificate is self-signed.)
            • remaining
            • 4096 bit
            • sha256WithRSAEncryption
Subject
Common Name (CN)
  • mx0.exasec.net
Alternative Names
  • imap.exasec.de
  • mx0.exasec.net
  • smtp.exasec.de
Issuer
Country (C)
  • US
Organization (O)
  • Let's Encrypt
Common Name (CN)
  • R13
validity period
Not valid before
2026-05-05
Not valid after
2026-08-03
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
Fingerprints
SHA256
E6:C4:73:E8:F9:2A:3C:5E:D8:BF:40:FA:C9:32:50:D8:D8:40:7D:7F:0E:40:CE:65:E5:10:EC:30:48:D1:7C:46
SHA1
5E:1F:0B:A9:05:C4:AB:DF:14:C2:02:9F:81:AD:9F:91:34:D3:1D:6E
X509v3 extensions
subjectKeyIdentifier
  • BD:EF:64:52:57:BF:04:06:01:40:3D:88:F6:53:E2:8E:FF:D0:51:75
authorityKeyIdentifier
  • keyid:E7:AB:9F:0F:2C:33:A0:53:D3:5E:4F:78:C8:B2:84:0E:3B:D6:92:33
authorityInfoAccess
  • CA Issuers - URI:http://r13.i.lencr.org/
certificatePolicies
  • Policy: 2.23.140.1.2.1
crlDistributionPoints
  • Full Name:
  • URI:http://r13.c.lencr.org/78.crl
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E:
  • F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7
  • Timestamp : May 5 19:01:54.311 2026 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:01:93:7E:14:F3:86:DA:C0:1E:A6:24:33:
  • 29:70:27:55:B7:EA:87:1A:86:77:36:61:1A:32:CA:17:
  • 30:D0:FC:93:02:20:6D:8B:41:AA:B5:12:D6:CB:E7:F2:
  • 3A:F0:1D:29:F0:97:CE:1B:5F:48:97:FD:75:F1:78:DB:
  • A4:9D:A7:A9:7D:08
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37:
  • 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23
  • Timestamp : May 5 19:01:54.183 2026 GMT
  • Extensions: 00:00:05:00:0D:A4:FD:EF
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:C0:D9:C1:F9:37:52:8F:16:74:07:58:
  • EE:E8:0F:CA:B0:31:9A:1A:9B:E1:C2:86:78:E1:D5:74:
  • 02:3C:11:B5:A8:02:20:37:2F:9C:74:BB:BF:BB:40:56:
  • 9B:A2:C7:EE:06:49:B3:C4:7B:DF:AE:7D:E6:F5:0D:8C:
  • AC:3A:88:AA:2B:9B:48