Len
Thanks for your help
It actually a differnet mail server (not mail.dialnet.co.uk) but I know what
the problem is now (It looks like the hostname is corrupt under Imail (I was
looking in the wrong place!!)
You did come up with some interesting comments though and I have forwarded
these on to the parties concerned
Thanks again
Dave
> -----Original Message-----
> From: Len Conrad [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, July 11, 2000 10:37 AM
> To: [EMAIL PROTECTED]
> Subject: Re: [IMail Forum] Host Name Problem
>
>
> >IP settings on the server are correct and DNS would appear to be set up
> >correctly - Any Ideas? - as mails sent from the system are sometimes
> >rejected by other mail hosts with a 501 Invalid Address message.
>
> On further thought, you might have some of the pb's discussed here:
>
> http://bind8nt.meiway.com/itsaDNSmess.cfm
>
> ie, if your "HELO/EHLO hostname" and "MAIL FROM: sender@senderdomain"
> don't
> have A and/or MX records, some mail servers will decide "invalid hostname"
>
> and reject the SMTP mail.
>
> Also, you should have the reverse zone setup at least for the ip of your
> mail servers.
>
> Your ns has reverse authority for the mail.dialnet.co.uk ip:
>
> # dig -x 193.164.97.17
>
> ; <<>> DiG 8.2 <<>> -x
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
> ;; QUERY SECTION:
> ;; 17.97.164.193.in-addr.arpa, type = ANY, class = IN
>
> ;; ANSWER SECTION:
> 17.97.164.193.in-addr.arpa. 1M IN PTR nt1.dialnet.co.uk.
>
> .... but I suggest that you replace "nt1" with "mail" as the PTR data for
> .17, just to be paranoid.
>
> Len
>
> Len
> http://BIND8NT.MEIway.com: ISC BIND 8 installable binary for NT4
> http://IMGate.MEIway.com: Build free, hi-perf, anti-spam mail gateways
>
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