Gabriel Hahmann <[EMAIL PROTECTED]> wrote:
> I'm new to the list and have a problem with my mail system. Recently I'm
> receiving a lot of spam emails coming from the internet but the sender is a
> user from my domain. Then I tried the same thing directly from other system,
> as described below:
>
> telnet mailsystemwithproblem 25
> helo testdomain
> MAIL FROM: <[EMAIL PROTECTED]>
> RCPT TO: <[EMAIL PROTECTED]>
> DATA
> test
> .
>
> I've done this with success, and the machine that i've used to telnet is not
> in the mynetworks or other parameter.
This makes sense; MXs outside your networks should be able to send mail
to your domains.
> The problem is that all my users are receiving spam from themselfs. My
> server is not an open relay because from outside I can't send email to other
> domains, but if somebody connects and send to my own domain it works like I
> said before.
/etc/postfix/main.cf:
smtpd_recipient_restrictions =
...
reject_unauth_destination
check_sender_access hash:/etc/postfix/copycats
...
/etc/postfix/copycats:
testdomain.com REJECT
Be aware that your own users will not be able to send email to each
other unless they're on mynetworks or SASL authenticated (both permits
should precede the reject_unauth_destination directive).
> My configuration is listed below, i just changed the name of the domain with
> testdomain.com and another domain that this machine receive mail with
> anotherdomain.com:
As advised in the DEBUG_README, next time include the output of
'postconf -n'.
--
Sahil Tandon <[EMAIL PROTECTED]>
