White List our Mail Servers
If you're experiencing mail deliverability issues, you should send the following list of IP addresses to your IT department to whitelist.
| # |
Hostname |
IP |
| 1 |
ms1.ssmx.net |
91.146.104.26 |
| 2 |
ms3.ssmx.net |
31.3.241.228 |
| 3 |
ms4.ssmx.net |
108.61.174.107 |
| 4 |
ms5.ssmx.net |
45.76.132.45 |
| 5 |
w1.smartsrv.co.uk |
185.234.36.224 |
| 6 |
w2.smartsrv.co.uk |
185.234.36.225 |
| 7 |
w3.smartsrv.co.uk |
185.234.36.226 |
| 8 |
w4.smartsrv.co.uk |
185.234.36.227 |
| 9 |
st1.smartsrv.co.uk |
185.234.36.244 |
| 10 |
st2.smartsrv.co.uk |
185.234.36.245 |
| 11 |
xs1.ssmx.net |
185.189.237.244 |
All of these IP addresses are included in the SPF record: spf.ssmx.net