Am 18.12.2014 um 13:38 schrieb Robert Fitzpatrick:
We use Postfix on our gateways that only transport to destination
servers, they do not have any local users except for standard
system/root/admin accounts. How can I get Postfix to not allow senders
to use the hostname in their email address. Would it work and is it safe
to add such a REJECT to a sender_check hash file or another way to
prevent? This example below shows the sender using multiple addresses
including two of three with the hostname. When the end user receives the
mail, it shows from
in general: postconf -n missing
in case of the problem: don't allow senders where you would not accept
incoming mail for (that's a general thing for a sane MTA setup) and use
"reject_authenticated_sender_login_mismatch" *before*
permit_sasl_authenticated
P.S: you did something terrible wrong because reply to your message
leads in 4 URBL hits!
URIBL_BLACK
URIBL_DBL_SPAM
URIBL_JP_SURBL
URIBL_WS_SURBL
