Help and learning

The recommended way of doing this is to white-list the whole doodle.com domain, and configure your mail solution such that it checks the SPF records to determine if a host is a valid sender. This way you don't have to modify your configuration whenever we change our mail delivery setup.

If your mail solution does not allow this, you can still white-list our IP address ranges:

• IPv4: 94.230.219.128/26, e.g. 94.230.220 and 94.230.221
• IPv6: 2a02:418:6057::/48