I had this same problem for a while when I first set up my server. My ISP's IP assignment--even though I had a static IP--listed my IP as a Dynamic IP, so many domains didn't accept e-mail from my server, notably Earthlink.net. However, I was able to send e-mail to those domain-admins to let them know I was a legitimate domain and not trying to spam their users. So it is probably not your setup, but the remote servers and how they accept mail. Does this happen with a lot of domains or just one or two? Hope this helps! Corey > I have setup a sendmail server and have been using it successfully for a > week or so now. I added some more accounts and these people and been > complaining of having some of their emails returned to them with the > following error: > > ------------------------------------------------------------------------ > > ----- The following addresses had permanent fatal errors ----- > <*****@letsos.com> > (reason: 501 5.5.4 Invalid Address) > > ----- Transcript of session follows ----- > ... while talking to mail.letsos.com.: >>>> HELO mail.frazerbilt.com. > <<< 501 5.5.4 Invalid Address > 554 5.0.0 Service unavailable > > --------------------[ here is the details.txt file: > ]-------------------- > > Reporting-MTA: dns; mail.frazerbilt.com. > Received-From-MTA: DNS; adsl-65-66-208-5.dsl.hstntx.swbell.net > Arrival-Date: Thu, 1 Jan 2004 09:45:24 -0600 > > Final-Recipient: RFC822; *****letsos.com > Action: failed > Status: 5.5.0 > Diagnostic-Code: SMTP; 501 5.5.4 Invalid Address > Last-Attempt-Date: Thu, 1 Jan 2004 09:45:25 -0600 > > ------------------------------------------------------------------------ > > The * is to hide the real email address. > > I thought it might have something to do with the reverse lookup of my > mail servers name, but I checked and it is correctly mapped to > mail.frazerbilt.com. > > My servers IP address is 65.45.50.130. > > Can anyone tell me what exactly that error message means? > > Thanks -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
