Three ideas come to mind: 1) announce a different public name than the local machine name. A) EG: machine name:donttellanyone.theservername.com public (DNS) name: www.theservername.com B) Then set up virtusertable entry routing root at donttellanyone.theservername.come to your email address. C) edit /etc/aliases so that "root: | /dev/null " 2) start using greylisting! Milter-greylist works well w/sendmail for light- medium load machines. =) 3) Turn off inbound email on port 25, if you can. On Wednesday 15 April 2009 18:57:57 Neil Aggarwal wrote: > Hello: > > On a CentOS5 machine I set up for a client, in /etc/aliases, > I set root's mail to forward to my email address so I can > get notices from cron, etc. > > Unfortunately, I am now getting a lot of spam which is > sent to root at theservername.com > > How can I tell sendmail to not accept external email to > root? > > I searched the Internet and found some horribly convoluted > solutions. There has to be a simple way to do this, like > putting a line in sendmail.mc or something. > > Anyone know a good solution? > > Thanks > Neil > > -- > Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com > Eliminate junk email and reclaim your inbox. > Visit http://www.spammilter.com for details. > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.