Include Constant Contact IP Addresses in Your SPF or SenderID Record


The SPF Alignment Documentation is here, SPF Alignment -


I am seeing DMARC failures due to this SPF value coming across, "" with Constant Contact Email. 


I have an SPF Record of - v=spf1 -all


Would I need to update the SPF Record on my end to accommodate the change on Constant Contact side, which is different than how I am currently receiving it? 








Hello @RichB378 ,


For specialized assistance regarding authentication, I'd advise speaking with our Delivery team directly.

William A
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