I am sending emails from my server via PHP > postfix > Sendgrid. In PHP, I set the From: header to my noreply@domain.com. However, the email will always have Apache@mail.domain.com in the From header.
New to sending emails from the server, what configuration files should I look at? Or how can I debug this?
I am setting the headers like this in PHP:
$headers = "From: ".$from."\r\n";
$headers = "Reply-To: ".$from."\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";
The problem was that one of the $headers .= lines didn’t have a .= and was overwriting the previous headers. Easy to miss I guess.