To the extent this is worth thinking about at all, I think it can be left to
local policy. If I were implementing this and was worried about it, I'd check
DMARC for all the froms in the field and pick the most restrictive policy.
If we need to say anything at all (and I don't think we do), it s
Here is an attempt at language which explains why multiple-from messages
are excluded from DMARC processing.:
"RFC 5322 allows the From header to include a list of address terms. This
format is uncommon and some mail systems are known to reject such
messages. The source mail system is unlikely
I began wondering if Aggregate Reporting works only because DMARC has been
embraced by a small portion of domain owners.
1) Is Aggregate Reporting a significant portion of all mail? In some
cases, Yes.
My organization's data:
Inbound volume is 11 times greater than my outbound volume.
Inbound ma
