That sounds very likely. How to I configure sendmail to not do that? -----Original Message----- From: redhat-list-admin@xxxxxxxxxx [mailto:redhat-list-admin@xxxxxxxxxx] On Behalf Of Steve Phillips Sent: Saturday, January 03, 2004 10:22 PM To: redhat-list@xxxxxxxxxx Subject: RE: Sendmail configuration problem? Some servers refusing to receive mail from me... oh, actually, I should kick myself. >> ----- 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 your MTA is adding a . at the end of its FQDN and as mail.frazerbilt.com. is not a valid DNS name you get the 554 error. -- Steve. > I doubt that is the cause. The users that are complaining of the > problems had previously been using another mail server without any > issue. They simply switched over to my new mail server and started using > it. > > They have most of their addresses in their outlook address book, so if > it worked before then there shouldn't really be a reason that it won't > work now. > > And yes, it does say "invalid address", but that isn't really very > informative. There are at least 4 addresses used in the mail > transaction: > > Sending MTA HostName > Receiving MTA HostName > Sender Email address > Recipient Email address > > I am just trying to decipher exactly what the recipient MTA is telling > me. But I doubt I will know for sure until I call them directly on > Monday. > > Thanks for the suggestions =0) > > -----Original Message----- > From: redhat-list-admin@xxxxxxxxxx [mailto:redhat-list-admin@xxxxxxxxxx] > On Behalf Of Steve Phillips > Sent: Saturday, January 03, 2004 9:11 PM > To: redhat-list@xxxxxxxxxx > Subject: Re: Sendmail configuration problem? Some servers refusing to > receive mail from me... > > The problem does not appear to be your end, rather the addresses your > users are trying to send e-mail to. > > Check the address, you will probably find invalid characters in the area > you have "blanked" out. > > for example.. > > [steve@gateway steve]$ telnet mail.letsos.com 25 > Trying 68.164.127.90... > Connected to mail.letsos.com. > Escape character is '^]'. > 220 mail.letsos.com Microsoft ESMTP MAIL Service, Version: 6.0.3790.0 > ready at Sat, 3 Jan 2004 21:00:30 -0600 > HELO focb.co.nz > 250 mail.letsos.com Hello [210.48.7.253] > MAIL FROM: <test@xxxxxxxxxx> > 250 2.1.0 test@xxxxxxxxxxxxxxxxxxxx OK > RCPT TO: <fr<ed@xxxxxxxxxx> > 501 5.5.4 Invalid Address > > The clue is the bounce message - they are not telling fibs. If it says > "oh > yeah, this address <*****@letsos.com> is invalid" then it simply is - at > times this can be an extra dot, a space or other hard to spot things, > but > it _will_ be invalid. (a classic is a trailing space in the domain name > :-) ) > > Also, keep in mind - this message was generated by the far end mail > server > - this means that your users sent mail through a server, the server (not > necessarily your one) tried to deliver it, the letsos server said "no, > bog > off, this is invalid" and the sending server said "darn !" and > generateda > message to send to your-user@xxxxxxxxxxxxxx to tell them that the e-mail > address they just tried to send to was not valid. most of this can be > completely independant of your mail server (a trick spammers like to > take > advantage of) and as long as your mail server is working ok your user > will > get the bounce, if your mail server is not working they wont get a > bounce. > Things look fine for your mail system as far as I can see and this looks > like a PEBKAC error. > > > -- > Steve. > > > >> 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 >> >> >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list >> > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
