Unable to connect, secure and authenticate any connection
Does the remote host support TLS/SSL connections on port 443?
Summary
Host:
smtp.google.com, 2607:f8b0:4004:c0b::1b, port 443
Protocols:
Failed
Unable to connect, secure and authenticate any connection
Protocol support
Protocol support:
TLS 1.3
No support
TLS 1.2
No support
TLS 1.1
No support
TLS 1.0
No support
SSL 3.0
No support
SSL 2.0
No support
Verification:
Unable to connect, secure and authenticate any connection
Does the remote host support TLS/SSL connections on port 443?
API
You may perform this lookup using the API and get the results as easy-to-parse JSON data.
Read more on the API at https://iamroot.tech/about/api (regarding authentication and rate limits, among other things), or give it a go right away using the 'try it' button.
INFMultiple A-records! Domain 'smtp.google.com' has several A-records, and thereby multiple IPs to check. IP 2607:f8b0:4004:c0b::1b will be used.
048
+000
Check protocols
048
+000
Start SSL 2.0 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
048
+000
Start TLS 1.3 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
048
+000
Start TLS 1.2 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
048
+000
Start TLS 1.1 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
049
+000
Start TLS 1.0 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
049
+000
Start SSL 3.0 protocol check, smtp.google.com (2607:f8b0:4004:c0b::1b), port 443
5.059
+5.010
Protocol check of SSL 2.0 done in 5.010ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.059
+5.010
Protocol check of TLS 1.0 done in 5.009ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.059
+5.010
Protocol check of TLS 1.2 done in 5.010ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.059
+5.010
Protocol check of TLS 1.1 done in 5.010ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.059
+5.011
Protocol check of TLS 1.3 done in 5.010ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.062
+5.013
Protocol check of SSL 3.0 done in 5.012ms - failed Unable to connect to host 'smtp.google.com' (2607:f8b0:4004:c0b::1b) on port 443.
5.062
+003
ERRUnable to connect, secure and authenticate any connection Does the remote host support TLS/SSL connections on port 443?
5.062
+000
Done
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