Firewall it and read up on hardening Linux. Get rid of ALL SERVICES NOT NEEDED. Those emails you are seeing are more than likely the nightly cron jobs. If you did nothing with sendmail after install it only listens locally on 127.0.0.1 that is default. -----Original Message----- From: Billy Davis [mailto:bdavis@xxxxxxxxxxxx] Sent: Friday, December 05, 2003 11:46 AM To: redhat-list@xxxxxxxxxx Subject: Re: How to detect spammers? ----- Original Message ----- From: "Jason Staudenmayer" <jasons@xxxxxxxxxxxxxx> To: <redhat-list@xxxxxxxxxx> Sent: Friday, December 05, 2003 10:34 AM Subject: RE: How to detect spammers? > Start by making sure your not a open relay. Then check your maillog for > outside connections sending email outside of your domain (relaying). It > would also help if we knew what MTA you have running. The maillog has entries that coincide with the suspected spam transmission times. Also, the entries include 'mailer=relay' and 'relay=[127.0.0.1]'. We do not use the RH Server for mail at all, but I did notice that 'sendmail' is enabled, so I disabled it. What else do we need to do? Thanks, Bdavis > > -----Original Message----- > From: Billy Davis [mailto:bdavis@xxxxxxxxxxxx] > Sent: Friday, December 05, 2003 10:22 AM > To: redhat-list@xxxxxxxxxx > Subject: How to detect spammers? > > > We have reason to believe that someone on the Internet > is using our RH9 Linux server to distribute spam. Are > there any log files that we can check to verify this? > How can we prevent it? > > Thanks, > Bdavis > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
