[wp-trac] [WordPress Trac] #28909: Update PHPMailer to 5.2.8

[WordPress Trac]

#28909: Update PHPMailer to 5.2.8
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 Reporter:  MattyRob                     |       Owner:
     Type:  enhancement                  |      Status:  new
 Priority:  normal                       |   Milestone:  Future Release
Component:  External Libraries           |     Version:  trunk
 Severity:  normal                       |  Resolution:
 Keywords:  has-patch dev-feedback punt  |     Focuses:
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Comment (by MattyRob):

 Having looked at the
 [https://github.com/PHPMailer/PHPMailer/blob/master/changelog.md
 Changelog] and removed all of the references to added or changed
 translation files and document updates this is what remains:

 Increase timeout to match RFC2821 section 4.5.3.2 and thus not fail
 greetdelays, fixes #104
 ~~Add timestamps to default debug output~~
 Add connection events and new level 3 to debug output options
 ~~Allow custom Mailer types (Thanks to @michield)~~
 Cope with spaces around SMTP host specs
 Fix processing of multiple hosts in connect string
 ~~Autoloader now prepends~~
 ~~Make autoloader work better on older PHP versions~~
 Avoid double-encoding if mbstring is overloading mail()
 Make quoted-printable encoder respect line ending setting
 Fix serverHostname on PHP < 5.3
 Improve performance of SMTP class
 Implement automatic 7bit downgrade
 ~~Improve example images, switch to PNG~~
 Remove setting the Return-Path and deprecate the Return-path property -
 it's just wrong!
 Add HTML5 email validation pattern
 Check php.ini for path to sendmail/qmail before using default
 Don't use quoted-printable encoding for multipart types
 ~~Remove useless PHP5 check~~
 ~~Use SVG for build status badges~~
 Store MessageDate on creation
 Better default behaviour for validateAddress

 I've crossed through the items that would at first glance appear to be
 irrelevant to WordPress, AutoLoader for example is not bundled or used in
 WordPress, nor is debug mode or custom Mailer types. The rest of these
 items need checking.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28909#comment:18>
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