Re: Re: Exim4 setup for LAMP web site.

[Gary Roach <gary719_list1@verizon.net>]

I got that a valid DNS name isn't present. What do I do about it. Does 
this mean that I need to submit something to my ISP or use one of my 
existing email accounts for a name or stick in something from the 
returns I get from running host. I know what them problem is. I just 
don't know how to fix it. I use Verizon Fios with  an M1424WR router if 
that is any help.

Gary R.

On 01/-10/-28163 11:59 AM, debian@kulisz.net wrote:
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> On 23/09/10 21:35, Gary Roach wrote:
>    
> > Well, you were correct about the authentication being a problem. I fixed
> > it but still no joy. I ran the swaks testing program with: swaks --auth
> > --to *me*@verizon.net --server outgoing.verizon.net.
> > This asked for the usual login and returned a long list of things. The
> > last lines were:
> >
> > <-  235 2.7.0 LOGIN authentication successful.
> >   ->  MAIL FROM:<root@*mycomputer*.domain>
> > <** 550 5.1.8 invalid/host-not-in-DNS return address not allowed
> >   ->  QUIT
> > <-  221 2.3.0 Bye received. Goodbye.
> >
> > I understand that my ISP is trying to validate me as a source but am not
> > sure what to do to fix it.
> >      
> Host-not-in-DNS means that you have no valid DNS name and when
> destination mail system is doing DNS lookup can not verify you, thus
> rejecting emails from this source.
> Provide valid entry in dns for your mail server and then it should work.
> - -- 
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>