For some reason, the following pice of code has stopped working.
mail("email@example.com", $subject, $message, "From:No Replynofirstname.lastname@example.org\nX-Mailer: PHP/" . phpversion());
I am completely stumped!
I have a possibly-related error in PHPList starting this month -- PHP's process gets killed near-immediately while trying to send mass mail. Used to send 100 emails an hour with no problem.