[wp-trac] [WordPress Trac] #42693: WordPress 4.9 sends an "admin email address was changed" message to you at example.com on new install

[WordPress Trac]

#42693: WordPress 4.9 sends an "admin email address was changed" message to
you at example.com on new install
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 Reporter:  tigertech                             |       Owner:
     Type:  defect (bug)                          |      Status:  new
 Priority:  normal                                |   Milestone:  4.9.2
Component:  Upgrade/Install                       |     Version:  4.9
 Severity:  normal                                |  Resolution:
 Keywords:  has-patch needs-testing dev-feedback  |     Focuses:
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Comment (by seanchayes):

 The patch needed minor refresh and I also chose the @example.com from
 #comment:12 (but it can easily be changed).

 I spent time testing the regular install of WordPress with this patch.
 During a fresh install of WordPress and upon completing the install with
 this patch enabled the actual send was skipped as intended.

 For Multi-site, however, my attempts were not succesfull :-( so I could
 not test completely.

 I did, however, notice a similar function
 ```update_option_new_admin_email```
 in
 ```wp-admin/includes/misc.php```

 that also triggers an email send and I updated that function with the same
 check for @example.com used in the other portions of the patch.

 The patch is 42693v6.diff

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Ticket URL: <https://core.trac.wordpress.org/ticket/42693#comment:13>
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