I had a similar problem until I gave the machine a name. I've since moved on to postfix but that was the fix for sendmail anyway. I assume if I had spend long enough contemplating the sendmail docs there might have been a way to convince it to it anyway but the time wasn't worth it. Prior to getting my own domains I just used the address my ISP assigned to my IP. Josh On Fri, 29 Jun 2001, David Christian wrote: > I can't seem to send mail from Linux using mutt and sendmail. The linux > machine is on LAN behind behind a Router, and so doesn't have a valid IP > address or domain name. > > Does anyone know how to configure sendmail so that the various MTAs out > there will believe me about who I am? Do I somehow need to relay to > Qwest.net's mail router? > > Here is a sample message I got back from NCSU: > > > ---- Begin Error > > The original message was received at Fri, 29 Jun 2001 06:35:23 -0500 > from dchristi at localhost > > ----- The following addresses had permanent fatal errors ----- > rousseau at csc.ncsu.edu > (reason: 501 <dchristi at goliath.qwest.net>... Sender domain must exist) > > ----- Transcript of session follows ----- > ... while talking to celestial-switchboard.csc.ncsu.edu.: > >>> MAIL From:<dchristi at goliath.qwest.net> SIZE=578 > <<< 501 <dchristi at goliath.qwest.net>... Sender domain must exist > 501 5.6.0 rousseau at csc.ncsu.edu... Data format error > > > ---- End Error > > > > > > _______________________________________________ > tclug-list mailing list > tclug-list at mn-linux.org > https://mailman.mn-linux.org/mailman/listinfo/tclug-list >