[wp-trac] [WordPress Trac] #52822: PHPMailer change in WordPress 5.7 breaks working sites

[WordPress Trac]

#52822: PHPMailer change in WordPress 5.7 breaks working sites
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 Reporter:  tigertech                |       Owner:  (none)
     Type:  defect (bug)             |      Status:  new
 Priority:  high                     |   Milestone:  5.7.1
Component:  Mail                     |     Version:  5.7
 Severity:  normal                   |  Resolution:
 Keywords:  needs-patch 2nd-opinion  |     Focuses:
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Comment (by desrosj):

 Introduced in [50397]/#52577.

 Chatted with @audrasjb about this briefly today in Slack and wanted to add
 a summary of that conversation here for transparency.

 Option 2 is one I would definitely strongly oppose. Over the last 3-5
 major releases we have made a number of changes that eased the burden of
 updating PHPMailer in Core by eliminating any direct library modifications
 allowing the source code to be copied verbatim (see #41750, #50377,
 #50379, #50176, #52369).

 Option 3 also makes me nervous, and it's preferable to not roll back
 external libraries unless it's the last option.

 I'm hoping to dive into this in the next few days to better understand it.

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Ticket URL: <https://core.trac.wordpress.org/ticket/52822#comment:6>
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