Gerry,
If what you say were true, then almost no mail would be delivered, as most
everyone does use MX records to point to their SMTP server.
Unfortunately I have already deleted your original and my reply, so I have
to work from memory. But I do seem to recall the portion of the log you
sent, showing the MX IP address, prior to the IP used for the domain.
Also, NT (like other O/Ss) checks the local HOSTS file prior to querying
DNS, so entries there can cause DNS to be bypassed.
If the DNS you use is having problems, that will cause trouble for IMail.
I'd suggest you try another DNS (your providers?) as the DNS entry in the
IMail SMTP settings. If that show improved delivery, then I think you are
having DNS problems.
Not much can be done if the destination domain has only one MX host and on
the Web Server there is a misconfigured (won't accept that domains mail!)
SMTP. That would have to be fixed at their end.
Daniel Donnelly
________________________________________________________
----- Original Message -----
From: "Gerry Dalton" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, November 17, 2000 6:31 PM
Subject: Re: [IMail Forum] chronic DNS unhappiness
> Daniel,
>
> I have to disagree with you on one point. It may supposed to work that
> Imail checks DNS MX records first and then goes to the domain name, but I
> have logs showing just the oposite. I have had a LARGE number of
> complaints about users being unkown and when I check the Imail logs it
> turns out that Imail has tried to deliver the one and only time to the
> www.domain.name or domain.name NOT the MX records entry for that
domain.name.
>
> This increase in failures seemed to start right after 6.00 went on. We
> have seen a number of people post items on this list concerning related
> problems.
>
> Gerry
>
>
> At 11:02 AM 11/17/2000 -0500, Daniel Donnelly wrote:
> >John,
> >
> >I can see one way that a message might be returned with 'unknown user'.
> >
> >As you know IMail tries MX records first and if all those fail, will try
the
> >IP for the domain. So, if the MX hosts are down or unresponsive, then the
> >domains IP is tried (today, usually the web server, not a mail server)
and a
> >SMTP server is found, IMail will attempt delivery. However if that mail
> >server (on the Web Server) is not configured to accept that domain/user,
it
> >won't allow IMail to send, so IMail then bounces back to the sender, most
>
>
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