I use a payment automation service that sends out emails to my customers about updating payment methods on file if they are expired or when I first set a customer up in this system they’ll get a welcome email. This payment service uses SendGrid as the ESP it seems. I reached out to my vendor to see if I can add SFP/DKIM records to improve alignment for this Source. They responded and said they do offer DKIM and wanted to know which domain I would like them to generate the records for. I gave them my domain and also asked about SPF and they responded that they do offer SPF as well. They then responded back with 3 records.
The first is a MX Record which has a host that is em444.mydomain and a Value of mx.sendgrid.net.
The second is a TXT Record which has a host that is em444.mydomain and a Value of v=spf1 ip4:184.108.40.206 -all so that’s my SPF record
The third is a TXT Record which has a host that is m7._domainkey.mydomin.com and has a Value of k=rsa; t=s; p=xxxxxxxxxxxxxx which is the DKIM record
What is that first MX record for? Also, in the DKIM record shouldn’t it start with v=DKIM1;
I’m kind of new to this SPF/DKIM/DMARC thing so forgive me if my question is not asked correctly, I’m happy to elaborate on anything if it helps. Thanks in advance!