SSL-Tools

SSL check results of renholland.com

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Discover if the mail servers for renholland.com 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, 12 Nov 2023 08:30:17 +0000

The mailservers of renholland.com can be reached through a secure connection.

Servers

Incoming Mails

These servers are responsible for incoming mails to @renholland.com addresses.

Hostname / IP address Priority STARTTLS Certificates Protocol
mx01.1and1.com
74.208.5.21
 10
supported
smtp.ionos.com
DANE
missing
PFS
supported
Heartbleed
not vulnerable
Weak ciphers
not found
  • TLSv1.2
  • TLSv1.1
  • TLSv1.0
  • SSLv3
7 s
mx00.1and1.com
74.208.5.3
 10
supported
smtp.ionos.com
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 @renholland.com address so far. Test mail delivery

Certificates

First seen at:

CN=smtp.ionos.com,O=IONOS Inc.,L=Chesterbrook,ST=Pennsylvania,C=US

Certificate chain
Subject
Country (C)
  • US
State (ST)
  • Pennsylvania
Locality (L)
  • Chesterbrook
Organization (O)
  • IONOS Inc.
Common Name (CN)
  • smtp.ionos.com
Alternative Names
  • smtp.ionos.com
  • smtp.perfora.net
  • pop.ionos.com
  • smtp.1and1.com
  • imap.1and1.com
  • pop.1and1.com
  • mx00.1and1.com
  • mx01.1and1.com
  • imap.ionos.com
  • pop.perfora.net
  • imap.perfora.net
  • mout.perfora.net
  • mx00.perfora.net
  • mx01.perfora.net
  • mx00.ionos.com
  • mx01.ionos.com
  • mx00.ionos.mx
  • mx01.ionos.mx
  • *.mrelay.ionos.com
Issuer
Country (C)
  • US
Organization (O)
  • DigiCert Inc
Organizational Unit (OU)
  • www.digicert.com
Common Name (CN)
  • GeoTrust TLS RSA CA G1
validity period
Not valid before
2023-03-15
Not valid after
2024-04-14
This certifcate has been verified for the following usages:
  • Digital Signature
  • Key Encipherment
  • TLS Web Server Authentication
  • TLS Web Client Authentication
Fingerprints
SHA256
CA:6C:7E:C0:D3:A1:E3:62:61:36:38:10:8B:F8:FC:6C:D2:1B:98:73:45:B9:50:14:77:47:DE:D8:BB:63:11:E9
SHA1
3F:DE:04:7E:7C:C2:C1:30:19:0A:04:88:74:31:2E:25:5E:98:13:51
X509v3 extensions
authorityKeyIdentifier
  • keyid:94:4F:D4:5D:8B:E4:A4:E2:A6:80:FE:FD:D8:F9:00:EF:A3:BE:02:57
subjectKeyIdentifier
  • 3C:C1:4C:12:BA:78:D0:A8:E1:47:84:FF:D3:EF:70:16:60:BA:6D:FC
crlDistributionPoints
  • Full Name:
  • URI:http://cdp.geotrust.com/GeoTrustTLSRSACAG1.crl
certificatePolicies
  • Policy: 2.23.140.1.2.2
  • CPS: http://www.digicert.com/CPS
authorityInfoAccess
  • OCSP - URI:http://status.geotrust.com
  • CA Issuers - URI:http://cacerts.geotrust.com/GeoTrustTLSRSACAG1.crt
ct_precert_scts
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 76:FF:88:3F:0A:B6:FB:95:51:C2:61:CC:F5:87:BA:34:
  • B4:A4:CD:BB:29:DC:68:42:0A:9F:E6:67:4C:5A:3A:74
  • Timestamp : Mar 15 11:26:42.129 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:20:29:E0:39:FA:4F:D0:0D:4E:D3:55:95:AD:
  • 6F:93:F7:18:DA:FE:58:AC:4F:29:9B:A6:B3:30:50:1A:
  • 99:7B:70:02:02:21:00:BC:3E:3E:8D:24:D8:EC:8D:6B:
  • DB:5C:70:00:72:7C:4C:2F:08:DF:ED:40:94:76:DC:AF:
  • 24:E1:D4:62:A8:F2:B3
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 73:D9:9E:89:1B:4C:96:78:A0:20:7D:47:9D:E6:B2:C6:
  • 1C:D0:51:5E:71:19:2A:8C:6B:80:10:7A:C1:77:72:B5
  • Timestamp : Mar 15 11:26:42.029 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:44:02:20:15:5B:EE:F9:1F:AD:1A:60:98:AA:96:93:
  • 2B:DF:21:12:3B:06:4C:8C:53:63:B8:DB:D7:2B:A7:A4:
  • 38:40:0D:5E:02:20:59:BC:E0:C2:3F:CE:D2:9C:F1:F7:
  • 56:ED:88:3D:B6:DF:1C:99:E5:58:C5:3A:89:53:96:A5:
  • 8C:DB:4D:0E:AF:A2
  • Signed Certificate Timestamp:
  • Version : v1 (0x0)
  • Log ID : 48:B0:E3:6B:DA:A6:47:34:0F:E5:6A:02:FA:9D:30:EB:
  • 1C:52:01:CB:56:DD:2C:81:D9:BB:BF:AB:39:D8:84:73
  • Timestamp : Mar 15 11:26:41.957 2023 GMT
  • Extensions: none
  • Signature : ecdsa-with-SHA256
  • 30:45:02:21:00:DC:D7:54:4E:C0:85:00:A7:43:7A:8D:
  • 41:AF:84:9A:4F:71:53:B1:DE:9B:03:ED:93:FD:31:38:
  • 06:E2:12:CE:D7:02:20:4E:EE:2B:D9:EB:C7:8D:49:0D:
  • 2A:F6:A5:E1:02:64:4C:7D:24:E7:44:8E:F0:6E:6E:33:
  • 3E:A4:16:81:60:FC:2C