Mail header "from" is malformed / #4471

Mails coming from Streber have the following "From:" mail header:

  Content-type: text/html; charset=UTF-8
  From: Streber Email Notification <do-not-reply@domain.tld>

This line is parsed by Thunderbird as the first line of the mail's html code.

I simply switched the following two lines and got the result I had expected.

from std/mail.inc.php

    629         if($html_format) {
    630             $headers .= "Content-type: text/html; charset=UTF-8rn";
    631             $headers .= "From: $fromrn";
    632         }
 

... have to go to...

from std/mail.inc.php

    629         if($html_format) {
    630             $headers .= "From: $fromrn";
    631             $headers .= "Content-type: text/html; charset=UTF-8rn";
    632         }
 

Greets,
Alex