In certain cases, e.g. if your mail server is behind a firewall with restricted access, you might have to specifically allow EuropeanMX to connect to your mail server. To do so, we advice to specify the following hostname in your firewall:

delivery.antispamcloud.com

This hostname automatically contains all the live IPs in our delivery network and requires no further configuration changes. If that for any reason is not possible, use the list below and subscribe to the update notification, which will inform you about any changes to our IP pool. If you have coding skills, alternatively use the following links to periodically get a plain list of all IPs.

Plain Text Lists:
All IPs IPv4 only IPv6 only

Subscribe to IP-Pool update notifications: