Frequently Asked Questions

0030
CheckTLS source IP addresses and domains
0040
What is the difference between Professional and Corporate subscriptions?
0050
Why do you "score" TLS instead of giving a Yes or No answer?
0060
May we use the CheckTLS name and/or logo?
0070
How do I fix my email?
My email fails one or more of your tests
XYZ company will not do business with us unless we pass your test(s)
0080
Do you have a non-working TLS host I can test with?
0090
Why two different credentials: CustomerCode and UserCode?
0100
CheckTLS shows hostname verify error but OpenSSL does not?
0110
Why is my email slow?
0120
CheckTLS security
0130
What is the MXConfidenceFactor?