mta-sts
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aykevl
Online tool for MTA-STS checking: https://aykevl.nl/apps/mta-sts/
The `RFC 8461` defines: ``` sts-text-record = sts-version 1*(sts-field-delim sts-field) [sts-field-delim] sts-field-delim = *WSP ";" *WSP sts-version = %s"v=STSv1" ``` So based on that the "v=STSv1 ;" should be considered...
The service seems to be struggling to resolve DNS entries that are, in fact, publicly resolvable. Try running the "gmail.com" domain and you'll see the errors.
I have an IPv6 only site (https://mta-sts.forfun.net/.well-known/mta-sts.txt) and it can't be reached by the test (https://aykevl.nl/apps/mta-sts/): `Error: Could not connect to the HTTPS server: [Errno 101] Network is unreachable.` Is...
Seem to be having validation issues when checking IDNs with .クラウド or .xn--gckr3f0f TLD.
Try forfun.net. (https://mta-sts.forfun.net/.well-known/mta-sts.txt is there, but the test can't seem to find it)
Hi, Our MTA-STS is working fine, but we get an error on the MTA-STS check which looks like it's due to the tool giving an error after checking the certificates...
posteo.de uses a small `max_age` value of five minutes. max_age: 300 The service reports the warning below. > Error: Very short max_age field specified. It is less than a day...
Error: SSL error while connecting to the HTTPS server: TLSV1_ALERT_INTERNAL_ERROR.
It is best practice to include a User-Agent and some servers block requests without a User-Agent.