Provide complete IP coverage in your SPF record

Your email instructions tell us to add to our SPF record.  Here is an illustration of the IP addresses covered by that entry.  However, it appears you are sending emails from other IP addresses.  This conclusion is supported by the documentation later in your "Email Delivery... FAQ".  Specifically, the following IP blocks are apparently not covered by ( - ( - ( -

If you're going to send mail through all of those address blocks, they should be included in the SPF record for, so we don't have to manually add them using the ip4 mechanism on our own SPF record.  (There is a limit to the space allowed on a single line of a TXT record on many DNS hosts.)  Additionally, if you're not going to add them to your SPF record for, then you should update your documentation to indicate that we also need to include those three netblocks using an ip4 mechanism.

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  • Feb 25 2019
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