I have a weird DNS problem if anyone has seen it I have two domains at
fault, on my cable account I can ping www and mail. for each domain I can
do the same on my Virgin net account but if I send mail from Yahoo I get the
DNS error..
Sorry, I couldn't find a mail exchanger or IP address. (#5.4.4)
other people also have problems sending mail. As both domains have had
problems now for over a month I have ruled out cached information and can
only think that there is a physical DNS entry on a large bandwidth/dial-up
or DNS providers server. But as I can ping with no problems cannot think of
a way to solve this problem has anyone got any ideas or come across a
similar problem.
Mike Mckay
----- Original Message -----
From: "Daniel Donnelly" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 17, 2001 9:23 PM
Subject: Re: [IMail Forum] Name resolution problem
> Josh,
>
> The normal reason for seeing this types of responses are that the Sendmail
> systems you are attempting to deliver to are doing a PTR lookup (reverse)
> and are not getting what they expect, the same name as your server is
using.
> I find that your DNS has the information now, but it would appear that
these
> other servers are not getting that info. Now it could be many things, but
it
> has to be DNS problems, still. Now those other servers may be using old
data
> that has not yet expired. But that also means it is likely to be a DNS
> problem.
>
> Hmm... I just tried to get a SOA record for the domain and 2 attempts have
> failed. Yes, you still have DNS problems!
>
> Len is likely to come along and tell you more, but if he does not, then
> visit his and other sites and start checking your DNS.
>
> Daniel Donnelly
> ________________________________________________________
>
> ----- Original Message -----
> From: "Josh Piche" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, May 17, 2001 3:47 PM
> Subject: [IMail Forum] Name resolution problem
>
>
> > I've noticed a larger number of files in the queue than usual. Many are
> are
> > being retried a number of times. A look in the log showed a couple of
> error
> > messages popping up quite often:
> >
> > 1. 451 <[EMAIL PROTECTED]>...Sender domain must resolve
> > 2. 451 4.1.8 <[EMAIL PROTECTED]>...Domain of sender address
> > [EMAIL PROTECTED] does not resolve
> > 3. 450 4.4.3 For input: <[EMAIL PROTECTED]>... policy analysis
> > reports DNS error with your source domain.
> >
> > We've recently moved the Imail server behind a NAT, and have had some
> > trouble with DNS and forwarding, so this may have caused the problem.
> > However, email for the most part seems to be flowing, with the execption
> of
> > mailing lists. It appears from a quick scan of the log that only lists
> are
> > having these difficulties.
> >
> > Thanks for the help
> > Josh
> >
> >
> >
> >
> >
> > Please visit http://www.ipswitch.com/support/mailing-lists.html
> > to be removed from this list.
> >
> > An Archive of this list is available at:
> > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
> >
>
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>
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