[wp-trac] [WordPress Trac] #40576: Sending emails broken in 4.7.2

[WordPress Trac]

#40576: Sending emails broken in 4.7.2
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 Reporter:  pavelevap           |       Owner:
     Type:  defect (bug)        |      Status:  new
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  External Libraries  |     Version:  4.7.2
 Severity:  normal              |  Resolution:
 Keywords:  close               |     Focuses:
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Comment (by pavelevap):

 I agree that it is mostly webhoster issue, but on the other hand WordPress
 was updated automatically and users were not awared of this serious issue.
 I found it when debugging why lead forms stopped working for one client.
 There should be some kind of warning message that emails stopped working
 when function is disabled or something similar, I guess. Now there is no
 warning, emails only silently fail :-(

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Ticket URL: <https://core.trac.wordpress.org/ticket/40576#comment:4>
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