We are having an issue with deliverability at certain clients and they have come back with some details regarding why our emails are not coming through. The advice was provided that the envelope from field is different to the sender address. Example:
Envelope from: MunchkinIDfirstname.lastname@example.org
(Where acme is an internally owned domain)
I believe that SPF and DKIM alignment are completed (but these are at domain level?), but this seems like a really strict filter that will only allow an exact match of the two email addresses to come through. Has anyone experienced this or have ways of navigating around this?
Thanks in advance,