1. You must have DNS services somewhere. I am similarly setup abd I use www.zoneedit.com. Free and competent.
2. Most cable-based broadbands and DSL do have a fixed dns string. Mine is in the form of <cable-modem-mac>-<cpe-mac>.<a>.<b>.<ips>.com. Reverse look-up your own dynamic ip and see what it resolves to. Use this as input to your dns entries (zoneedit.com). 3. Strongly recommend also configuring spf and domain-key signing via your dns entries. This helps "sane" sites to not flag you as a spammer. -----Original Message----- From: L. V. Lammert <[EMAIL PROTECTED]> To: Douglas A. Tutty <[EMAIL PROTECTED]> Cc: OpenBSD Misc <misc@openbsd.org> Subject: Re: running mail server at home Date: Thu, 7 Feb 2008 09:38:30 -0600 (CST) Delivered-To: [EMAIL PROTECTED] On Thu, 7 Feb 2008, Douglas A. Tutty wrote: > On Thu, Feb 07, 2008 at 02:51:31AM -0800, Chris wrote: > > I have a P3 box with 120GB HDD that's doing web, ssh and samba at the > > moment. I > > am planning setup sendmail, spamd, mimedefang, clamd and spam-assassin > > on this box along with web, ssh and samba. > > > > I was wondering if anyone has any experience with running a mail > > server at home. > > In reality, you cannot run your own mail server at home. This would require: 1) DNS resolution for your domain name 2) Appropriate MX records 3) Valid REVERSE DNS for your IP #3 is usually the big factor for most ISPS, without it, you will not be able to send email to any 'sane' mail server. Lee ================================================ Leland V. Lammert [EMAIL PROTECTED] Chief Scientist Omnitec Corporation Network/Internet Consultants www.omnitec.net ================================================