Gmail SMTP settings propably using port 465 when 587 is ...
github.com › craftcms › cmsFeb 13, 2019 · A similiar setup with the exact same settings and same Gmail account on another server where port 465 is open works fine when port 587 is selected. Steps to reproduce. Be sure that port 465 is closed on the server. Set up either a Gmail account or a Gmail SMTP server in email settings, using smtp.gmail.com and port 587 with TLS.