My domains are used for websites or vanity domains.
Sending mail, SPF and other records are under control; thank you.
My question is specifically about receiving emails and
Mx records vs forwarding.
My tests with email forwarding show that they arrive with an SRS string in the headers
Code:
SRS1=HHH=example.com==HHH=TT=example.org=alice@example.net
. That's legitimate, but can it cause deliverability, trust or other issues? Is forwarding otherwise bad?