Date: Sun, 13 Feb 2005 23:13:29 -0200 From: Suporte Matik <asstec@matik.com.br> To: freebsd-isp@freebsd.org Subject: Re: Sendmail question Message-ID: <200502132313.36458.asstec@matik.com.br> In-Reply-To: <1BC9C5447DEF1F4FBE3927A31D6B540404DC08@gehrig.hall.oopz.com> References: <1BC9C5447DEF1F4FBE3927A31D6B540404DC08@gehrig.hall.oopz.com>
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--nextPart4676859.sEq3IXSfrf Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Sunday 13 February 2005 22:46, Noah Davidson wrote: > The only problem with that approach is that this is a back up server and > the users may not be able to know of all of the users. Is there any way = to > not have all of these bounced mail go to the postmaster / root account. > sendmail should reject mail for nonexistent users by default and not forwar= d=20 to root unless you have any strange alias for all but you say bounced mail= =20 what confuses me a little bit, but anyway, isn't it that your systema=20 accounts are exploited by the spammers ? so if having 10 domains you may ge= t=20 10 spams for tty in your root mailbox, to prevent you may try this in your= =20 access: tty@ ERROR:"4.2.2:450 No such user here." and so on for each systema account and rebuild the access.db and probably y= our=20 headache goes away Hans > Thanks > Noah > > ________________________________ > > From: Bill Vermillion [mailto:bv@wjv.com] > Sent: Sun 2/13/2005 2:30 PM > To: Noah Davidson > Cc: FreeBSD-ISP List > Subject: Re: Sendmail question > > > > 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 > > > _______________________________________________ > freebsd-isp@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-isp > To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org" =2D-=20 Infomatik implementamos asas na sua rede. (18)3551.3591 (18)8112.7007 _______________________________________________________ Participe na lista de seguran=E7a,=20 recebendo as mais importantes not=EDcias na hora Entre em http://info.matik.com.br e participe. _______________________________________________________ Mensagens sem assinatura GPG n=E3o s=E3o nossas. Messages without GPG signature are not from us. _______________________________________________________ --nextPart4676859.sEq3IXSfrf Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBCD/tA22x1wvvbslkRAp/sAJsEKI6aGjUxU59q6/Kowl4zrZ6sOACgpELb dxCAKOoCxtihSkL+43+YFew= =XnjM -----END PGP SIGNATURE----- --nextPart4676859.sEq3IXSfrf--
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