RE: [cobalt-users] Error in maillog

["Dan" <dan@xxxxxxxxxxxxx>]

> Can anyone tell me what this message in my maillog means?
>
> May 12 16:21:46 www sendmail[3308]: QAA03308: ruleset=check_mail,
> arg1=<eerrr@xxxxxxxx>, relay=207.153.203.196], reject=451
> <eerrr@xxxxxxxx>... Sender domain must resolve
>
>  I have thousands of them one right after another.  I had to shutdown
> sendmail last night when it was overloaded with this same error.  It just
> appeared again today.  Once I restart Sendmail it goes away. Any
> way to stop
> this from happening again?
>

I'd say it means wetr.com doesn't exist or the nameservers for that domain
were down so the domain didn't resolve.
--- looking up host wetr.com
--- traceroute error: host not found

--- looking up host www.wetr.com
--- traceroute error: host not found
--
Dan Kriwitsky