| SMTP코드 |
ESMTP코드 |
메세지 |
실패량 |
실패율 |
| 550 | 5.1.1 | 550 5.1.1 RUSR 220.85.13.24: No such user: | 26 | 24.76% |
| 550 | 5.2.1 | 550 5.2.1 RACT 220.85.13.24: Mailbox is inactive: | 13 | 12.38% |
| 550 | 5.7.1 | 550 5.7.1 RDENY 220.85.13.24: The receiver denied your mail. Please contact the receiver with another way.: | 65 | 61.90% |
| 552 | 5.2.2 | 552 5.2.2 RFULL 220.85.13.24: Mailbox is full: <777byung@hanmail.net> | 1 | 0.95% |
