[wp-trac] [WordPress Trac] #64477: Upgrade to WordPress core 6.9 from 6.8.3 causes email failure?

[WordPress Trac]

#64477: Upgrade to WordPress core 6.9 from 6.8.3 causes email failure?
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 Reporter:  philipg100    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Mail          |     Version:  6.9
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by MadtownLems):

 You can read more about this here:
 https://make.wordpress.org/core/2025/12/12/wordpress-6-9-hotfixes/

 I believe the email issue should be resolved in January's expected 6.9.1
 maintenance release, but if you're on a tighter timeline, you can see if
 the Hotfix plugin fixes it for you: https://wordpress.org/plugins/hotfix/

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Ticket URL: <https://core.trac.wordpress.org/ticket/64477#comment:1>
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