Jessica, Implement iptables to send them to neverneverland - nslookup the offending IP/domain and reject any traffic from that offender... -- /==========The One===========\ "..I don't care your a PhD...put you're hands up, and step away from my keyboard..." On 8/23/05, Jessica Zhu <jessica@xxxxxxxxxxxxx> wrote: > Hi, > > It looks like we are experiencing the mail attack now. > > In our maillog, we have a lot of User Unknown message like the following. > > Aug 23 11:52:25 s1 sendmail[2110]: j7NFqPL02110: > <Oscard@xxxxxxxxxxxxx>... User unknown > Aug 23 11:52:25 s1 sendmail[2110]: j7NFqPL02110: from=<>, > size=17601, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, > relay=mail.vis-inc.net [66.77.28.202] > > It looks like that all the from is <>, does anyone have the way to fight > against it. > > Jessica -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
