Hi,
i'm trying to slow down and block backscater mails and i try to use:
reject_sender_login_mismatch and smtpd_sender_login_maps.
I have some questions about how to pass this restriction for some cases.
The situation is this:
We have some other servers where we have installed other webapplication
that send mail from there using for example i...@ourdomain.com without
authentication.
These mails are sending to our mail server, but now we filter all these
addresses to prevent using our addresses in MAIL FROM to send mails to
us.
How to allow these servers to pass the rule
reject_sender_login_mismatch?
We have this configuration for sernder restrictions:
smtpd_sender_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
check_sender_access hash:/etc/postfix/access,
# reject_sender_login_mismatch,
reject_non_fqdn_sender,
reject_unknown_sender_domain,
reject_unauth_pipelining,
permit
i have commented out the parameter, temporary until i find out how to
solve this problem.
I added in access file this kind of entry:
serveripaddress OK
but this does not help, i got mailer-daemon mail when other server sent
mail.
Thanks in advanced!
Regards, Ali Nebi!
