Start("TestSender") by sending us an email.
See below for how and where to send the email.
Before usingyou may want to list CheckTLS.com in your list of allowed domains (whitelist us) so the report returns to you is not sent to your spam folder.
We cannot respond to Challenge-response email filters (e.g. SpamArrest, Support Sentry SpamBlock, iPermitMail) so you MUST manually allow mail from CheckTLS.com.
This passcode only works once. You can refresh this page to receive another one.
You can ask for these additional data fields:
You can limit to set of accepted SSL versions by adding !version separated by ':', e.g. !TLSv1_1!TLSv1_2!TLSv1_3 to disable TLS versions 1.1, 1.2, and 1.3 while still allowing TLS version 1.0.
When you send an email to the special address listed below with your unique passcode,performs all the steps that Internet email systems go through to receive email. It records every command and byte of data that your system sends and every answer and byte of data that our system replies back. does actually receive your email, and it learns as much about your system as it can in the process.
Because CheckTLS focuses on security,tries to establish a secure (TLS) connection with your system. Along with recording everything, it looks at the security of the your system for things like: certificate contents and signers, encryption algorithms, key lengths, hostname mis-matches, weak cyphers, etc.
replies to your email with its results.
The reply email looks like:
Your email was sent securely using TLS.
More information will show here when a Listener is Started.