[buddypress-trac] [BuddyPress] #5186: Duplicate MIME-Version header

[buddypress-trac]

#5186: Duplicate MIME-Version header
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 Reporter:  johnjamesjacoby  |      Owner:
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  1.9
Component:  Core             |    Version:  1.0
 Severity:  normal           |   Keywords:  needs-patch
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 From #WP22492:

 >In certain cases, Wordpress sends emails containing two "MIME-Version"
 headers. This causes email rejections from some Amazon SES SMTP servers in
 particular.
 >
 >To reliably reproduce, a default multisite install with BuddyPress can be
 used. When a user tries to register and create a website, the activation
 email contains this bug. Unfortunately I don't know how to reproduce this
 error with Wordpress itself, but I believe this bug is related to the
 Wordpress core. If any plugin happens to set a custom header of "MIME-
 Version" to an email message, Wordpress core is the culprit for the
 insertion of the duplicate mail header.

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/5186>
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