chore: Handle Sentry Errors (#2020)

If a contract contains an invalid email address, the sidekiq jobs for conversation continuity would error out. handling this exception gracefully.

lib/exception_list.rb

@@ -1,5 +1,8 @@
 module ExceptionList
-  URI_EXCEPTIONS = [Errno::ETIMEDOUT, Errno::ECONNREFUSED, URI::InvalidURIError, Net::OpenTimeout, SocketError].freeze
+  URI_EXCEPTIONS = [Errno::ETIMEDOUT, Errno::ECONNREFUSED, URI::InvalidURIError, Net::OpenTimeout, SocketError, OpenURI::HTTPError].freeze
   REST_CLIENT_EXCEPTIONS = [RestClient::NotFound, RestClient::GatewayTimeout, RestClient::BadRequest,
-                            RestClient::MethodNotAllowed, RestClient::Forbidden].freeze
+                            RestClient::MethodNotAllowed, RestClient::Forbidden, RestClient::InternalServerError, RestClient::PayloadTooLarge].freeze
+  SMTP_EXCEPTIONS = [
+    Net::SMTPSyntaxError
+  ].freeze
 end