[wp-trac] [WordPress Trac] #49687: wp_mail() - Why is no envelope sender defined?

[WordPress Trac]

#49687: wp_mail() - Why is no envelope sender defined?
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 Reporter:  vbbp                                  |       Owner:  SirLouen
     Type:  enhancement                           |      Status:  closed
 Priority:  normal                                |   Milestone:  6.9
Component:  Mail                                  |     Version:  5.4
 Severity:  major                                 |  Resolution:  fixed
 Keywords:  has-test-info has-patch has-dev-note  |     Focuses:
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Comment (by SirLouen):

 I'm suspicious that despite `postfix` provides a wrapper for Sendmail, its
 doing something under the hood. I've spinned my staging mail server to
 test this and I'm unable to reproduce any of these errors, by force
 setting `sendmail_path` with the `-f` and as @jamieburchell says,
 `sendmail_from` doesn't change anything at all.

 So they might be using something not `postfix`. I'm going to spin my other
 instances with Exim, Sendmail, etc... to see if I find the culprit.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49687#comment:59>
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