I found a possible bug for their email routing.
I have two mailboxes on this domain whose email is handled by cloudflare
email route.
userA -> catchall forwarded -> gmail
userB -> specific forwarded -> yahoo
both userA and userB have subscribed to the debian mailing lists.
But, the messages sent from debian lists, only reached into gmail, the
yahoo mailbox never received this kind of message, even the list message
is sent from userB.
So I doubt:
cloudflare found the recipient address in message header has no userB
included (the recipient in a list mail is the list address), it
forwarded the messages to the catchall address (userA).
So this is the bug. maybe need your verification.
Thanks.
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