Date: Thu, 02 Sep 1999 22:30:17 +0300 From: Evren Yurtesen <yurtesen@ispro.net.tr> To: Ryan Thompson <freebsd@sasknow.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Relaying with sendmail Message-ID: <37CED048.18DF78D6@ispro.net.tr> References: <Pine.BSF.4.10.9909021841230.12028-100000@sasknow.com>
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sendmail has a feature which lets you to allow relaying emails if the sender is your user only. this would help you I guess...but still this allows spammers if they set the sender address an address in your domain but this is also better than allowing anybody to relay through your server see /usr/src/contrib/sendmail/cf/README file which is the same file as the one at sendmail.org page... Evren Ryan Thompson wrote: > Hi all; > > I have a FreeBSD 3.2 machine that wears many hats... Among other things, > this machine does web, file, and mail hosting for outside clients (i.e., > clients on other networks). Sendmail is giving me some problems, though. > > I've searched the mailing list archives (and my own fairly extensive > archives)... And sendmail.org... But I never did find a good way to do > what I'm looking for. > > Basically, this machine is a mail host. My clients receive, or can > purchase, email accounts, something like name@sasknow.com. I also do > virtual hosting, so they may have their name@theirdomain.com. However, I > am having the old problem with relaying :-) > > I have created an /etc/mail/relay-domains file with entries for the other > machines on the local subnet. (Actually, I just added the line "10." to > allow the entire subnet). > > I understand that, to curb spam abuse, relaying should NOT be configured > "wide open"... However, how else can I ensure that clients with SMPT > access not be denied relaying when sending messages out? > > If it IS indeed necessary to configure sendmail wide open (promiscuous > feature), what would be the best way to implement this so that I can still > block troublesome domains? I looked at the documentation for > /etc/mail/access, but it seemed a bit sketchy.... And I'm not even sure if > it's possible to configure sendmail to accept from all and deny from some > using the access method. > > Thanks for any help > > - Ryan > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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