On 2024-06-23 20:24, Wietse Venema via Postfix-users wrote:
Jeff Peng via Postfix-users:
Hello

I saw gmx.de/web.de have a policy that, if the submission IP is not from DE/EU, messages will be routed to a different gateway which is listed in
spamhaus already. Otherwise if submission client's IP is in DE/EU,
messages will be routed out via the normal gateway whose IP is clean.
How to customized my own transport for that?

You can configure customized SMTP clients in master.cf, each with
an appropriate smtp_bind_address setting, and use transport_maps
to choose between those clients.

Thanks Wietse. other than binding multi-IP on a same host, is it better to have multi-geobased-MTAs for incoming messages?


References:
https://www.postfix.org/postconf.5.html#smtp_bind_address
https://www.postfix.org/transport.5.html

appreciate for the references.


AI is an experimental feature of this mailing list.


what AI is used for this mailing list?

Thanks.
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