Hi All: I provide mail services for a customer with an ecommerce website
on shopify.com. Under shopify's store config, the customer is entering
their own email address as the "mail from" address, and they're using
the same email address for order notifications.
As configured, order confirmations are being bounced by ASSP [from mail
32959-20378 [SpoofedSender] 220.127.116.11 <sales@...> to:
sales@... [spam found][blocked] -- No Spoofing Allowed --
[[xxxxxxxxx] Order #9999 placed by BobBiller] -> discarded/32959-20378.eml;
Shopify is using a helo of "smtp.shopify.com", but I assume their
mailserver IPs are not static.
Is there any way to allow mail addressed this way through on a
case-by-case basis, or do I have to whitelist "smtp.shopify.com"?