Am 18.06.2011 00:42, schrieb Daniel: > >> Once you have a well-thought-out and tested configuration, you should >> set: > >> unknown_address_reject_code = 550 >> unknown_client_reject_code = 550 >> unknown_hostname_reject_code = 550 > > Can you tell me why? What does 550 mean? > And why is it importent to set it?
you should read some manuals smtp-statuscodes are the minimum to know for administration 5xx = permanent error 4xx = temp fail, sender retries later again 2xx = OK
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