Changed paths:
M pkg/lore-relay/relay.go
M pkg/lore-relay/relay_test.go
Log Message:
-----------
pkg/lore-relay: handle default Google Workspace DKIM signatures
Google Workspace uses a default gappssmtp.com DKIM signature when a
custom key isn't set, formatting the domain as
<domain-with-hyphens>.<date>.gappssmtp.com.
Update the DKIM verification logic to allow these signatures by trusting
Google Workspace's internal sender verification, which prevents users
from sending emails with unverified From addresses. This prevents valid
emails from being rejected.