Outbound mail servers
Please find the list of Earthlink's outbound mail servers below:
| 15.XXX | 51.XXX | 135.XXX |
|---|---|---|
| 15.204.3.159/32 | 51.81.61.60/30 | 135.148.209.24/30 |
| 15.204.3.160/31 | 51.81.61.66/31 | |
| 15.204.3.162/32 | 51.81.61.68/31 | |
| 51.81.229.180/30 | ||
| 51.81.232.240/30 |