[wp-trac] [WordPress Trac] #39753: wp_mail() under PHP 7 hosted on Windows creates malformed email messages

[WordPress Trac]

#39753: wp_mail() under PHP 7 hosted on Windows creates malformed email messages
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 Reporter:  Andy Schmidt       |       Owner:  SergeyBiryukov
     Type:  defect (bug)       |      Status:  accepted
 Priority:  normal             |   Milestone:  4.7.3
Component:  Mail               |     Version:  4.7.2
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
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Comment (by Andy Schmidt):

 Yes, I have worked my way upstream (securing fixes for PHP 7.0/7.1 and in
 PHPmailer 6), so that each step will use appropriate behavior. Being
 consistent throughout will avoid this problem flipping back and forth
 every so often.

 So, let me just point to the PHP manual for mail():
 http://php.net/manual/en/function.mail.php

 PHP states clearly that both data as well as header ought to be terminated
 with \r\n.

 It seems that at some point, WordPress should commit to follow the
 prescribed behavior as much as possible while being mindful about backward
 incompatibility with legacy Linux systems.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39753#comment:8>
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