This is an intermittent error linked to trying to create a new outbound email - I can’t replicate it but I get enough occasional reports from agents that I I do believe it is a legitimate issue
My first guess is that these would be for contacts that do not yet exist in the contact DB and the call to create the record at time of email send is failing but as this is not reproducible I can’t really get FD support to look at failure logs or anything. Anyone else encountering this
Unlike the post here the DKIM and SPF for this outbound email account are fully verified and this only happens occasionally (maybe 1 email in 10,000) so I don’t think it is a system setting issue