[wp-trac] [WordPress Trac] #52906: Since WP 5.7 mail sent with send address other than domain is marked as possible spam

[WordPress Trac]

#52906: Since WP 5.7 mail sent with send address other than domain is marked as
possible spam
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 Reporter:  janv01        |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.7
 Severity:  normal        |   Keywords:
  Focuses:                |
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 After upgrade to wp 5.7 a mail sent within Woocommerce to customer is
 marked as possible spam.
 5.6.2 and before did not have this problem.
 Since 5.7 mail sent with sender mail address that has not the domain in it
 (in my case this is a gmail account while domain is different), gmail is
 marking the mail as possible spam.
 In the mail sent with 5.6.2 a via was shown next to the sender address.
 In the mail sent with 5.7 NO via was shown next to the sender address.

 Google says this about via:
 Extra info next to sender’s name
 You may see extra information next to someone's name when they send you a
 message. For example, you could get an email from your bank, but the
 sender's email address is from a different site.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52906>
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