SPF record with SoftFail ~all for domain won't verify for custom Email domain

Lokhan Wong 0 Reputation points

Hi, I'm trying to validate a custom domain, but the SPF validation checks keep failing. I suspect it has to do with the fact that the SPF record has multiple include entries and it has a SoftFail ~all instruction, which we are reluctant to change. Does the SPF validation only work with HardFail -all instructions and are SoftFail ~all records not supported?

Azure Communication Services
Azure Communication Services
An Azure communication platform for deploying applications across devices and platforms.
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  1. SnehaAgrawal-MSFT 17,481 Reputation points Microsoft Employee

    @Lokhan Wong Thanks for reaching here! Yes, you are correct, We support multiple mechanisms on an SPF record but not SoftFail. SPF validation only work with HardFail -all instructions and for SoftFail ~all records not supported.

    See- https://learn.microsoft.com/en-gb/azure/communication-services/quickstarts/email/add-custom-verified-domains

    If still you want to perform the SPF verification using ~all instead of -all could you Please reach out to us by sending an email with subject line “Attn:Sneha |thread title” to AzCommunity[at]microsoft[dot]com referencing this thread, would work closer on this.  

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