Date: Tue, 08 May 2001 23:05:46 -0400 From: James Housley <jim@thehousleys.net> To: Marc W <mwlist@lanfear.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: preventing SMTP Relaying, but having moving customers? Message-ID: <3AF8B40A.65DD8910@thehousleys.net> References: <200105090001.RAA83674@akira.lanfear.com>
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Marc W wrote: > > hello! > > i would like to have a couple of people access my mail server for > secure POP or IMAP access, but also want to prevent relaying on > sendmail (so i have relaying turned off right now). > > Now, the problem is, these people are accessing the server from > various machiens and various accounts, and it's well nigh impossible to > put their ip addresses or hostnames in /etc/mail/relay-domains. > > So, the question is, what means can I use to allow them to send > mail without opening myself up to relaying? > They prefered method, according to the sendmail.org website, is SMTP-AUTH. There are some details on the sendmail.org web site. But basicaly you have to install the cyrus-sasl port. Then add the required lines to /etc/make.conf from /etc/defaults/make.conf (search for SASL). Then rebuild and reinstall sendmail and configure cyrus-sasl. You will also have to add some rules to your sendmail.cf file, as shown on the website. What this will do is allow relaying for a user that would normaly be denied if they successfuly login as part of the SMTP processes. Most mail clients support this, Outlook/Express, Netscape, Eudora, ... Jim -- /"\ ASCII Ribbon Campaign . \ / - NO HTML/RTF in e-mail . X - NO Word docs in e-mail . / \ ----------------------------------------------------------------- jeh@FreeBSD.org http://www.FreeBSD.org The Power to Serve jim@TheHousleys.Net http://www.TheHousleys.net --------------------------------------------------------------------- Studies show that 1 out of every 4 Americans suffer some form of mental illness. So look at your three best friends, if they are okay it is YOU! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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