Am 24.11.2014 um 15:15 schrieb Matteo Cazzador:
First of all thanks,
for client job do you mean mail client like tunderbird or google mail?
client in context of MTA-to-MTA means delivering server
Is not my postfix server that generate a message like:
and *what* is the problem?
that is exactly how it has to work
* someone sends from google to a non existing address
* your server answers correctly
* the client (Goolge) generates a NDR to it's user
YOU MUST NOT change that behavior, otherwise any mail delivery is just
lottery and nobody on the sender side ever would realize a typo
if it ain't broken don't fix it
Delivery to the following recipient failed permanently:
2334...@netlite.it <mailto:2334...@netlite.it>
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server
for the recipient domainnetlite.it bymail.netlite.it
[my mx ip address].
The error that the other server returned was:
550 5.1.1 <2334...@netlite.it <mailto:2334...@netlite.it>>: Recipient
address rejected: User unknown in virtual mailbox table
I've only my postfix MX server on internet.
about http://www.postfix.org/ADDRESS_VERIFICATION_README.html
i post my smtp recipient restrction
smtpd_recipient_restrictions = reject_unauth_pipelining,
reject_non_fqdn_recipient,
reject_unknown_recipient_domain,
reject_non_fqdn_sender,
reject_non_fqdn_recipient,
reject_unlisted_recipient,
reject_unverified_recipient,
permit_mynetworks,
permit_sasl_authenticated,
reject_unauth_destination,
reject_rbl_client sbl-xbl.spamhaus.org,
check_recipient_access hash:/etc/postfix/greylist_filter,
check_recipient_access hash:/etc/postfix/spf_filter,
permit
Il 24/11/2014 14:51, li...@rhsoft.net ha scritto:
Am 24.11.2014 um 14:33 schrieb Matteo Cazzador:
Hi,i'm a novice i need to discard and not reject while i receive from
external domain to my mx server mail with this error
"Recipient address rejected: User unknown in virtual mailbox table;"
I don't want that a message (it is a really replay mail?) come back to
the sender of external domain.
Is it possible to disable this return message to the sender?
I neeed to reduce my server backscatter while sending 550 error to the
client.
But really my server send a email on the sender? I don't understand if
it is uppen.
what are you talking about?
a REJECT don't produce a backscatter
it's the clients job to generate a bounce or not
if you have a server in front of your postfix without a list of valid
RCPT then it needs to make rcpt-verification
(http://www.postfix.org/ADDRESS_VERIFICATION_README.html)
*never ever* discard messages while you signal "250 OK" to the sender,
it makes sane bounce-managment for senders impossible and at the same
time your MX to a loved spammer target because you accept anythiung
instead reject
