@William_A I realize this is an older thread but I have a similar situation. I have a group of companies and we draw from the same client lists for each and we hold webinars for each of them. All using the same constant contact account. It would be completely untenable for me to maintain a separate account with the same contacts for each of my companies. That would boost my constant contact bill from $1k per month to over $5k per month. I would change services before I did something like that. But the problem I am running into is that we use DKIM and DMARC in addition to SPF. But I can only use self-authenticate with one associated domain whether I use TXT record or I use CNAME records. And I came here to ask this very question. Can I not use multiple domains with my Constant Contact account even though I have already been doing so for 4 years now. And is there a way around this? Like if I copy the CNAME record or TXT record for each sending domain will they still authenticate or when I save it and it designates a single domain the others will fail?
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