Date: Sun, 13 Feb 2005 17:30:08 -0500 From: Bill Vermillion <bv@wjv.com> To: Noah Davidson <NoahD@oopz.com> Cc: FreeBSD-ISP List <freebsd-isp@freebsd.org> Subject: Re: Sendmail question Message-ID: <20050213223008.GA53176@wjv.com> In-Reply-To: <1BC9C5447DEF1F4FBE3927A31D6B540404DC07@gehrig.hall.oopz.com> References: <1BC9C5447DEF1F4FBE3927A31D6B540404DC07@gehrig.hall.oopz.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Ashes to ashes, and DOS to DOS Noah Davidson was heard to say on or about Sun, Feb 13, 2005 at 14:10 : > I have set up a new FreeBSD box as mainly a backup mail server, > although it is primary for a couple of domains. It is running > sendmail 8.13.3 and it works fine, except for all the spam that > is being sent to it to bad email addresses. I have aliased > the root account to an email group on another server so that > someone reads the root mail. The problem is that all the mail > that spammers are sending to address that do not exist get > bounced and the root account a notification (I believe it > is the postmaster alias which is aliased to root). Is there > any way to not have these notifications sent out. They are > filling up the mail boxes. I just want the return to sender, but > not to the root / postmaster as well. I have tried using the > confCOPY_ERRORS_TO in my .mc file, but that just sends it to an > additional account as well. Making assumptions that your sendmail is receiving bogus mail for accounts that you have sendmail receive here is approach you can take. Assume you have domains a.com b.com and c.com and your local-host-names has those. Then you need to find out what users you have for each domain If you have curly larry and moe on a.com and no one else, then you can build a virtualusrtable that looks like this. curly@a.com curly larry@a.com larry moe@a.com moe @a.com nouser And the accnount 'nouser' will be in your /etc/mail/aliases file and will look like this: nouser: /dev/null Run make in /etc/mail to create virtusertable.db and aliases.db and that should get rid of the bogus names going to root. I find the virtualusertable to be quite handy for elminating a lot of junk. It will only be a problem if you have a large user base or lots of domains. Bill -- Bill Vermillion - bv @ wjv . com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050213223008.GA53176>