Hi Jim - What you are looking for is called "masquerading" and is not too difficult to do. I had a lot of help from Steve Holmes last spring when I had to deal with that problem, and I wrote a letter to Linux Gazette describing my solution. Maybe you can adapt my solution to your situation. Here is my letter: >From chuckh at hudson.mhonline.net Thu Sep 20 10:17:02 2001 Date: Mon, 2 Apr 2001 10:21:46 -0400 (EDT) From: Charles Hallenbeck <chuckh@xxxxxxxxxxxxxxxxxxx> To: tag at ssc.com Subject: Masquerading in sendmail The question in issue 65 about masquerading with sendmail prompts me to share my recent experience doing just that. My distro is Slackware 7.1, and my sendmail version is 8.10.3, so the following may or may not work on your system. First, I found the source file from which my installed sendmail was generated. It is called "linux.smtp.mc" and is located in "/usr/src/sendmail/cf/cf/" (that is not a typo!) I copied it to "linux.mc" in the same directory in case I screwed something up. No 'bridge burns' here! Second, I added four lines to the source file, just before the 'mailer' lines at the bottom of the file. I have replace my actual ISP name with "ispname" below: define(`SMART_HOST', mail.ispname.net) MASQUERADE_AS(ispname.net) FEATURE(`masquerade_envelope') LOCAL_USER(`root,chuckh,projects,sherwood,writings') Third, I ran this source file through the m4 macro processor like this: prompt:# m4 linux.mc > sendmail.cf Finally, not noticing any error messages, I copied the resulting file to where it belongs, in "/etc/mail". The comma-delimited list of user names in the 'LOCAL_USER' line makes it possible for those users to exchange email with each other locally, without involving my ISP. DNS lookup is not disabled - I leave it active to assist in antispamming. The email program I prefer is Pine, whose configuration makes no mention anywhere of my ISP. HTH - Chuck My web site is http://www.mhonline.net/~chuckh The Moon is Waxing Gibbous (63% of Full) Visit me at http://www.mhonline.net/~chuckh "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -- Benjamin Franklin, 1759.
