SendGrid SMTP Diagnostic

Optional AUTH Test (won't send mail):






1) DNS A records for smtp.sendgrid.net

A records:
44.239.61.139
52.89.19.245
44.239.172.8
Server hostname: server.edustation.app
Server IP candidates:
66.11.126.172

2) SMTP connect to smtp.sendgrid.net:587 and STARTTLS

CONNECT ERROR: 111 - Connection refused