/me sighs
Of course, this would all probably be less complicated if the upgrade to Discourse 3.x didn’t appear to break incoming email via the Mailgun plugin entirely 
An error I’m seeing
From the logs:
# env tab
hostname discourse-app
process_id 9406
application_version 3030a538192252c9d29e4fb763d31810327f370a
HTTP_HOST discourse.somervilleyimby.org
REQUEST_URI /mailgun/incoming
REQUEST_METHOD POST
HTTP_USER_AGENT Go-http-client/2.0
HTTP_ACCEPT */*
HTTP_X_FORWARDED_FOR <redacted>
HTTP_X_REAL_IP <redacted>
time 2:59 pm
# info
Message (27 copies reported)
ActionController::InvalidAuthenticityToken (Can't verify CSRF token authenticity.)
lib/middleware/omniauth_bypass_middleware.rb:74:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:366:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
lib/middleware/enforce_hostname.rb:24:in `call'
lib/middleware/request_tracker.rb:228:in `call'
Backtrace
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:251:in `handle_unverified_request'
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:284:in `handle_unverified_request'
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:273:in `verify_authenticity_token'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:400:in `block in make_lambda'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:199:in `block (2 levels) in halting'
actionpack (7.0.3.1) lib/abstract_controller/callbacks.rb:34:in `block (2 levels) in <module:Callbacks>'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:200:in `block in halting'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `block in invoke_before'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `each'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `invoke_before'
Env
HTTP HOSTS: discourse.somervilleyimby.org
# backtrace
Message (26 copies reported)
ActionController::InvalidAuthenticityToken (Can't verify CSRF token authenticity.)
lib/middleware/omniauth_bypass_middleware.rb:74:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:366:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
lib/middleware/enforce_hostname.rb:24:in `call'
lib/middleware/request_tracker.rb:228:in `call'
Backtrace
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:251:in `handle_unverified_request'
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:284:in `handle_unverified_request'
actionpack (7.0.3.1) lib/action_controller/metal/request_forgery_protection.rb:273:in `verify_authenticity_token'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:400:in `block in make_lambda'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:199:in `block (2 levels) in halting'
actionpack (7.0.3.1) lib/abstract_controller/callbacks.rb:34:in `block (2 levels) in <module:Callbacks>'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:200:in `block in halting'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `block in invoke_before'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `each'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:595:in `invoke_before'
Env
HTTP HOSTS: discourse.somervilleyimby.org
Gonna go see if there’s any other reports of similar, but if any of y’all have ideas I welcome them!