I’ve recently installed a Discourse instance to serve the community purposes of my website. And used Mailgun’s SMTP credentials for emailing. Setup goes fine, and I received the setup email on my GMX adress.
But after I’ve tried to send private invites to my closest friends, it appears Gmail adresses aren’t received emails. It works for hotmail, yahoo, GMX, and all others major platforms, but not Gmail.
For your information, I use Mailgun’s API with Mailgun WordPress extension to manage emailing from my webzine. Totally works fine, even for Gmail adresses.
So why it doesn’t work with SMTP credentials in Discourse ? And why only with Gmail adresses ? Does someone have a hint or any idea about this ?
I really need to fix this issue, I don’t want to lose 30% of potential subscriptions because of this problem.