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It can't test hosts that aren't on 443 though, regardless of access to the relevant port, e.g. (obvs. elided mydomain here.) $ curl -XPOST -d 'fqdn=pop3.my
by zimpenfish 7y ago
It can't test hosts that aren't on 443 though, regardless of access to the relevant port, e.g. (obvs. elided mydomain here.)
$ curl -XPOST -d 'fqdn=pop3.mydomain:995' https://unboundtest.com/caaproblem/checkhost
invalid name pop3.mydomain:995
404 page not found
$ openssl s_client -connect pop3.mydomain:995 -showcerts </dev/null 2>/dev/null | openssl x509 -text -noout | grep -A 1 Serial\ Number | tr -d :
Serial Number
0325f31485b9c0f393e27b00e4678e881e3c