oh damn it...
i don't mean the MTA i think i mean MDA?
i would suggest to check MX-record or/and reply-to or/and SMTP mail from
so postfix can (maybe)probe only postmas...@doamin.tld and cache the result
Am 20.11.19 um 15:01 schrieb Wietse Venema:
Philipp Ewald:
BTW:
by reject_unverified_sender:
would it not be better to check sending server? like accept connection
on port 25 not whole sender? this way dont work with mailing list ( it
would but its produce many mail probing)
That would be immensely stupid idea. First, there is no requirement
that a sending MTA can receive email. Second, the sending MTA may
be an email forwarder. The only hosts that can know if the sender
address is valid are the hosts that receive email for that address.
wietse
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