Hi,
dadrc opened a new pull request at
https://github.com/splitbrain/dokuwiki/pull/3758:
RFC 5322 specifies that all mails SHOULD have a Message-ID field. While
originating SMTP servers MAY (as per RFC 5321) add a missing Message-ID, this
behavior is not mandatory.
Multiple mail providers, e.g. Gmail, reject mails without a Message-ID field,
rendering their users unable to receive mails from a Dokuwiki instance using a
standard-conforming mail server.
This commit simply adds a random Message-ID to a mail's headers during Mailer
class initialization. With the current behavior of setHeader(), overwriting
that header happens without additional changes, should another Message-ID be
necessary, warranted or desired.
Please help us to review this pull request, so new contributors get feedback in
a timely manner.
6568c7f0-2894-11ed-9a22-acc245ca6c64
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