How to get the correct detail for DKIM and SPF from vendor domain to add to TXT record for our domain so vendor can send as us and not be blocked as spam.
Hi. thanks for looking at this problem.
An external vendor does mail outs for us.
When they do mailouts their emails sent as email@example.com get blocked since it isn't our domain sending the email.
I understand we can add their DKIM information as a TXT record to our DNS to make their domain trusted to send as us.
Do you know what detail it needs?
I have found this article
I have gotten the vendor detail from the message header of an email they have sent as us.
I can do an nslookup like this:
nslookup -type=txt "vendorselector"._domainke
and it comes back with a text record like:
but there is no K or H value.
the other TXT records I have seen for DKIM have at least a K value which seems to be mostly RSA
Does anyone know if I do this kind of NSLookup and it returns that TXT record, if that is all I have to put in our DNS?
Normally I would just ask the vendor for this detail, but they don't seem to have the will to gather it.