On Mon, Sep 04, 2000 at 10:05:08PM +0000, Chip Rose. wrote:
> Hi,
>
> Can someone tell me why my fetchmail won't work anymore all of a
> sudden? It worked fine until recently - I don't know what's changed!.
> I'm getting a 451 SMTP error - mail doesn't get to my mailbox anymore -
> I can't understand the stuff I've read on the net about this 451 SMTP
> error. Thanks in advance.
>
>
> ****this is fetchmail result:
> 1 message for ncrose at mail.picusnet.com (602 octets).
> reading message 1 of 1 (602 octets) fetchmail: SMTP error: 451
> <[EMAIL PROTECTED]>... Sender domain must resolve
>
> ****this is from my /var/log/messages:
> Sep 4 01:31:43 localhost sendmail[431]: BAA00431: ruleset=check_mail,
> arg1=<[EMAIL PROTECTED]>,
> relay=localhost [127.0.0.1], reject=451 <[EMAIL PROTECTED]>... Sender
> domain must resolve
Chip, it looks like your domain name doesn't do reverse resolution. Here is
what nslookup says about picusnet.com:
>picusnet.com internet address = 207.7.64.44
That was the forward lookup. This is the reverse:
>207.7.64.44
Server: DNS1.MEGAHITS.NET
Address: 207.76.72.4
*** DNS1.MEGAHITS.NET can't find 207.7.64.44: Non-existent host/domain
My guess is that fetchmail is sending the mail to sendmail and sendmail is
checking if this domain is ok to accept. Most likely its looking at the domain
name and doing a reverse lookup only to find no reverse map.
Steve
--
illegitimi non carborundum
"Don't let the bastards grind you down"
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