Date: Tue, 16 Apr 2002 00:12:10 -0600 (CST) From: Ryan Thompson <ryan@sasknow.com> To: Steve Bertrand <steve@northnetworks.ca> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Sendmail... Message-ID: <20020416000156.B57269-100000@catalyst.sasknow.net> In-Reply-To: <1018926980.1783.94.camel@thinkpad1.northnetworks.ca>
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Steve Bertrand wrote to freebsd-questions@FreeBSD.ORG: > I have a few clients with dynamic IP addresses (and of course > dynamic rev-lookup names) on different ISP's that I need to allow > them to relay mail through my servers. > > Is there any way that I can allow all hosts relay mail and filter > the bad ones that don't have a legitimate domain name in their email > address? We have a similar situation with a few hundred mail users on our network. We opted to require POP authentication before relaying is permitted by SMTP. So, users have to check their mail 30-60 seconds before they will be allowed to send. The list is purged once a day. This gives a more or less transparent solution, without any extra support required by the client software. We *do* field maybe 1 support request per week about users getting "relaying denied" responses... usually from dial-up users who compose off-line and then connect to send. It's not that common. We also have webmail, which is a fine option for some customers who travel a lot. That, and if it is too much of a pain for them, they can always relay through their ISP... which takes the load AND support requirements off of us. I suppose we could insist upon SMTP auth, but that also becomes it's own support issue... and then we have a multi-headed beast ;-) > I am trying to convert an MDaemon (windows) mail server to BSD, and > this is pretty well the very last glitch I need to resolve. > > Tks, > > Steve > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > -- Ryan Thompson <ryan@sasknow.com> SaskNow Technologies - http://www.sasknow.com 901 1st Avenue North - Saskatoon, SK - S7K 1Y4 Tel: 306-664-3600 Fax: 306-664-3630 Saskatoon Toll-Free: 877-727-5669 (877-SASKNOW) North America To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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