[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  |     Focuses:
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Comment (by jamieburchell):

 Replying to [comment:37 dmsnell]:
 > After this change there is a chance of mail failure for sites with SPF
 configured but which does not allow mail to be sent on behalf of this
 domain and if those sites also do not have a properly configured DKIM and
 DMARC setup. Those sites should review their SPF policies or the
 `wp_mail_from` filter.

 If I don't set an envelope sender, it becomes the user the webserver is
 running as (apache) and the machine name (which is never the actual domain
 name) (e.g. xyz_web_prd_lon_01). I'm struggling to think of a scenario
 where not specifying the envelope sender would result in the desired
 behaviour.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49687#comment:39>
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