My server sends e-mail, but does not receive e-mail, it was working normally until days ago, I use Exim4 with Sendgrid.
I’ve already validated everything, and apparently it’s ok. I saw something about blocking, can someone help me?
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.