Date: Tue, 27 Aug 2002 08:16:40 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Mike Hogsett <hogsett@csl.sri.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Sendmail Rules Message-ID: <20020827071640.GB8294@happy-idiot-talk.infracaninophi> In-Reply-To: <200208270645.g7R6jDNL008296@axp.csl.sri.com> References: <200208270645.g7R6jDNL008296@axp.csl.sri.com>
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On Mon, Aug 26, 2002 at 11:45:13PM -0700, Mike Hogsett wrote: > We are, as many of you are also, experiencing an increasing number of > forged from adresses in email sent to our domains. Traditionally we have > allowed external mail to claim to be internal senders for a number of > reasons. What I would like to do is only permit hosts within our address > space to claim to be user@ourdomain(s).com and deny all external hosts > claiming to be user@ourdomain(s).com (with an appropriate error message). > How do I do this? I am not asking for you do to my homework, just point > me where I can find what I need if you could be so kind. Start with /usr/share/sendmail/cf/README, and look particularly at those options to do with the access map '/etc/mail/access'. Other resources for general sendmail wrangling include http://www.sendmail.org/faq, the sendmail-questions@sendmail.org mailing list and the Bat book: http://www.oreilly.com/catalog/sendmail2/ Cheers, Matthew -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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