Microsoft has announced that they will begin checking email coming in to Hotmail, MSN and Microsoft.com to determine whether the sending server has published a valid SPF record. The change is to occur on the first of October.
It makes sense, given that they have merged their own Caller I.D. for Email with SPF.
According to Microsoft, email coming from a server which does not publish an SPF record will not be out and out rejected but “will be further scrutinized and filtered”.
SPF – it’s not just a good idea.
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