On 10-18-2021 4:31 am, Henrik Peng wrote:
There are the domain registrars who have email forwarding for the
user's domains.
Do you know the forwarding happens against the "to:" address in the
message's header, or in SMTP's talking session (the rcpt to: command)?
I asked this question b/c I saw some mailing lists were not forwarded
correctly. Those messages' "to:" addresses are the list address, so
they were not forwarded by the rules setup by users.
I am kind of confused by the question. Who/what is doing the forwarding,
domain registrars or users and where? If there are rules in postfix to
forward, redirect, rewrite the recipient then postfix will use the RCPT
TO address. If you are talking about users setting rules in sieve then
sieve uses the header "to:" address and has no knowledge of what info
was given during the smtp session commands.
Are you talking about the registrar has example1.com forwarded to
example2.com at the DNS level? Doesn't that just mean a lookup for
example1.com is given the IP for example2.com? Which means the mail
server at example2.com is receiving an email addressed to
u...@example1.com? That depends on how postfix is configured to receive
mail for example1.com if at all. What do the logs show? What the email
rejected for relying or as unknown user?
