:-)I'd like to disable any mail from 'my.domain' from external networks and non authenticated users. For envelope addresses my solution works and is as follows:
At first bind valid addresses with their owners:
smtpd_sender_restrictions =
...
reject_sender_login_mismatch,
...
But this setting works for existing addresses only. That means that mail
from:
qwertyuiop1234567890@my.domain still won't be rejected here.
So the second restriction is:
list1 = check_client_access hash:/etc/postfix/list_of_my_networks, reject
smtpd_recipient_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
check_sender_access hash:/etc/postfix/file1
...
/etc/postfix/file1:
my.domain list1
/etc/postfix/list_of_my_networks
1.2 OK
3.4 OK
I'm not sure if it's the simplest solution but works fine... for the
envelope. I'm wondering if I could apply the same during the DATA phase
for the 'from:' field? Would be nice if you could do that similarly
without involving any other filters / milters. Is it possible?
Best regards, Marek
smime.p7s
Description: S/MIME Cryptographic Signature
