php - How to open port in Ubuntu 14.04 for Sendgrid -

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i have problem send email through sendgrid host. https://sendgrid.com/docs/classroom/basics/email_infrastructure/smtp_ports.html

how open port 25, 2525, 465 , 587 respectfully send mail sendgrid?

thanks

sendgrid provides rest api , dont need open ports that. article refers setting own smtp server not want. have @ this example better explain how can send mail using sendgrid.


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