Forum Discussion
Rule Creation in Exchange error?
Hello everyone, i am facing a very strange issue, in exchange online. First of all, the scenario is that i want to create a rule that reject mails from a user/s or group and a reject message will...
Status 5.7.1 is the proper status code for actively rejected NDRs, and to inform the sender delivery is not allowed. You can change the 5.7.1 to anything other in the reserved range for custom status codes 5.7.900-5.7.999. Removing would violate protocol, as a server capable of replying with status codes, must prepend the text part of the response with a code.
- Thank you for your reply, it was very confusing but now its clear.
