can courieresmtpd validate existence of mail addresses in the domains that
are not local (listed in hosteddomains/locals)?
We want to split SMTP servers from MX servers, and I'm curious if it
wouldn't result to accepting recipients that don't exist and are reject by
"550 user <...> unknown" messages.
We may distribute users' lists onto the SMTP servers of course, but we'd
like to keep delivery on the MX servers.
Another question is - can courieresmtpd validate existence of addresses
provided in mail from: in the same way as it validated rcpt to: ?
E.g. if rcpt to:<nosu...@example.com> is rejected with 550, mail
from:<nosu...@example.com> could be rejected with the same error.
Of course this can be only applicable to locally known domains.
And btw: can courier reject non-existing domains in rcpt to: even for users
with relaying privileges? mail from:<> nonexisting domains is rejected (if
BOFHCHECKDNS is 1). However rcpt to: is not validated the same way, so it's
quite often that users send mail to nonexisting domains.
... we are using a bit old courier, so it's possible that this is already
implemented. However I haven't seen any mention of these...
Matus UHLAR - fantomas, uhl...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Save the whales. Collect the whole set.