Some emails coming in via the mail receiver can still end up
with bad encoding when trying to enqueue the job. This catches
the last encoding issue and forces iso-8559-1 and encodes to
UTF-8 to circumvent the issue.
We have found when receiving and posting inbound emails to the handle_mail route, it is better to POST the payload as a base64 encoded string to avoid strange encoding issues. This introduces a new param of `email_encoded` and maintains the legacy param of email, showing a deprecation warning. Eventually the old param of `email` will be dropped and the new one `email_encoded` will be the only way to handle_mail.
This should make it easier to track down how the incoming email was created, which is one of four locations:
The POP3 poller (which picks up reply via email replies)
The admin email controller #handle_mail (which is where hosted mail is sent)
The IMAP sync tool
The group SMTP mailer, which sends emails when replying to IMAP topics, pre-emptively creating IncomingEmail records to avoid double syncing
Zeitwerk simplifies working with dependencies in dev and makes it easier reloading class chains.
We no longer need to use Rails "require_dependency" anywhere and instead can just use standard
Ruby patterns to require files.
This is a far reaching change and we expect some followups here.
- The test_email job is removed, because it was always being run synchronously (not in sidekiq)
- 34b29f62 added a bypass for critical emails, to match the spec. This removes the bypass, and removes the spec.
- This adapts the specs for 72ffabf6, so that they check for emails being sent
- This reimplements c2797921, allowing test emails to be sent even when emails are disabled
This lets an SMTP server optionally decide if it should reject a mail without
passing it on to Discourse at all, possibly before even reading the
email's payload, to prevent spam-induced backscatter and save resources.
This just does the bare minimum sanity checking that could prevent obvious
backscatter. For legit errors from legit users, Discourse will still send a
much more pleasant reply email.
Martin Brennan
Krzysztof Kotlarek
Guo Xiang Tan
Sam Saffron
Gerhard Schlager
David Taylor
Michael Brown
Rishabh
Bianca Nenciu
Bianca Nenciu
Guo Xiang Tan
Leo McArdle
Ryan C. Gordon
Régis Hanol
Rafael dos Santos Silva
Neil Lalonde
Arpit Jalan
Akshay