| 550 dmarc sender invalid | 1.65 | 0.2 | 5916 | 24 | 92 |
| 550 dmarc sender invalid - envelope rejected | 1.39 | 0.6 | 516 | 44 | 22 |
| 550 dmarc check failed | 0.31 | 0.6 | 7835 | 22 | 74 |
| 550 invalid sender address | 1.39 | 0.7 | 6188 | 26 | 62 |
| dmarc sender invalid - envelope rejected | 1.29 | 0.6 | 4057 | 40 | 36 |
| 550 5.7.1 rejected by dmarc policy | 0.63 | 0.2 | 311 | 34 | 57 |
| dmarc sender invalid mimecast | 1.75 | 0.5 | 9986 | 29 | 56 |
| 550-unrouteable address 550 invalid sender | 1.08 | 0.9 | 3321 | 42 | 20 |
| gmail 550 blocked by dmarc | 0.17 | 0.9 | 5263 | 26 | 55 |
| 550 5.0.0 invalid recipient | 1.11 | 0.2 | 5546 | 27 | 78 |
| 550 5.7.1 sender restriction | 0.87 | 0.8 | 2257 | 28 | 60 |
| said: 550 invalid recipient | 1.85 | 0.7 | 4983 | 27 | 81 |
| sending domain does not pass dmarc | 1.51 | 0.9 | 5993 | 34 | 31 |
| email received - dmarc check failed | 1.47 | 1 | 6215 | 35 | 45 |
