Am 06.04.2012 09:28, schrieb Rafiqul Islam: > My question is too many unknown user sending mail using my MTA(Postfix) so that hotmail,google reject mail from my > domain(mail.navigation.com <http://mail.navigation.com> and IP:202.53.168.75) and i don't know how to stop this > unexpected outgoing mail. ouch i did not see the "unknown user sending mail using my MTA" shutdown you server NOW or at least make it unacessable from the internet before you have a working mail-configuration with this ip-address you are known as spammer and will not be able the next time to provide any trustful mailservice anybody out there must not open port 25 from the internet becuase he was able to type "yum install postfix", that may sound rude but nobody needs more spamservers maintained by people missing the knowledge to maintain mailservices to not be a open-relay is the first and most important basic task ______________________________ from the postfix mailing-list: Preferred is "postconf -n" as per the list welcome message and the posting guidelines here: http://www.postfix.org/DEBUG_README.html#mail
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