This can only happen if there is no you do not have an Mx record defined
for the domain or if so the domains config has a problem. since the server
tryies to reach any mail exchanger for the domain but cannot reach The
other way is you might have Mx records with servers that are no online

 On
Wed, 28 Mar 2001, harmit wrote:

> I am sure they are configured.
> What  could be the other cause ?
>
>
> Wycliffe Bahati wrote:
>
> > This sounds like a dns error make sure you have mx records configured
> > correctly
> >
> > On Wed, 28 Mar 2001, harmit wrote:
> >
> > > This is the return  message I receive.
> > > Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4)
> > >
> > > --- Below this line is a copy of the message.
> > >
> > > Return-Path: <[EMAIL PROTECTED]>
> > > Received: (qmail 26154 invoked by uid 60001); 17 Jan 2001 10:12:00 -0000
> > > Message-ID: <[EMAIL PROTECTED]>
> > > Received: from 204.68.23.30 by nwcst285 for [63.109.242.5] via
> > > web-mailer(34FM.0700.15A.01) on Wed Jan 17 10:12:00 GMT 2001
> > > Date: 17 Jan 2001 03:12:00 MST
> > > From: harmit singh <[EMAIL PROTECTED]>
> > > To: [EMAIL PROTECTED]
> > > Subject: test mail
> > > X-Mailer: USANET web-mailer (34FM.0700.15A.01)
> > > Mime-Version: 1.0
> > > Content-Type: text/plain; charset=US-ASCII
> > > Content-Transfer-Encoding: quoted-printable
> > > ============================================================
> > >
> > >
> > >
> > > "Anthony E . Greene" wrote:
> > >
> > > > On Wed, 28 Mar 2001 00:25:48 harmit wrote:
> > > > >Hi
> > > > >I have a strange problem with my linux RH 6.1 box used as a mail server
> > > > >. When a user sends a mail from his personal acct like hotmail,usa.net
> > > > >the mail server doesnt recieve this message  & mail is bounced to the
> > > > >user who sent it, but it is accepting the mails from most of the
> > > > >domains  .but I am able to send mail to all the domains .Please let me
> > > > >know which entry in sendmail.cf(I guess problem lies with this file) is
> > > > >to be looked after & how to rectify this problem.
> > > > >Thanks in advance
> > > >
> > > > The bounce messages contain error messages that can help figure this out.
> > > > Post a bounce message (with *all* headers) to the list and we'll see if we
> > > > can tell you what is happening. Actually, all we need is the headers, we
> > > > don't need the text of the message.
> > > >
> > > > Tony
> > > > --
> > > > Anthony E. Greene <[EMAIL PROTECTED]> <http://www.pobox.com/~agreene/>
> > > > PGP Key: 0x6C94239D/7B3D BD7D 7D91 1B44 BA26  C484 A42A 60DD 6C94 239D
> > > > Chat:  AOL/Yahoo: TonyG05    ICQ: 91183266
> > > > Linux. The choice of a GNU Generation. <http://www.linux.org/>
> > > >
> > > > _______________________________________________
> > > > Redhat-list mailing list
> > > > [EMAIL PROTECTED]
> > > > https://listman.redhat.com/mailman/listinfo/redhat-list
> > >
> >
> > _______________________________________________
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>
>
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