Re: Sendmail host name lookup failure

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Have you looked in the /var/log/maillog or /var/log/messages for
additional information. This could also be a DNS issue, where the Yahoo
mailserver attempts to perform a reverse lookup of the sending server.
The other thing that you may want to do is use your ISP's mailserver as
a "smart relay". This would require modifying your /etc/mail/sendmail.cf
file.

Marcus O.

On Thu, 2005-05-26 at 09:17 +1200, Cameron Beattie wrote:
> I have a number of undelivered messages in the mailqueue.  The mailqueue 
> reports: Deferred: Name server: yahoo.com.: host name lookup failure. I 
> attempted to send these emails from a remote client (Outlook Express) and 
> cannot understand why the domain name can't be discovered.
> 
> nslookup yahoo.com.
> Server:    210.55.12.1
> Address:    210.55.12.1#53
> 
> Non-authoritative answer:
> Name:    yahoo.com
> Address:    66.94.234.13
> 
> echo test | sendmail -v user@xxxxxxxxx
> <snip>
> 250 2.0.0 <.ID.> Message accepted for delivery
> </snip>
> 
> /etc/resolv.conf:
> nameserver 210.55.12.1
> 
> /etc/hosts
> 127.0.0.1    servername    localhost.localdomain    localhost
> 
> Don't know if the following is relevant
> service nscd status
> nscd is stopped
> 
> Any help would be appreciated.
> 
> Regards
> 
> Cameron 

-- 
Marcus O. White <1lnxraider@xxxxxxxxxxx>


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