SMTP problems: Host not found, try again

[Dan Ritter]

On Tue, Jun 02, 2009 at 11:30:22AM -0400, david-8uUts6sDVDvs2Lz0fTdYFQ at public.gmane.org wrote:
> So I'm kinda sorta close to finishing my server rebuild, but I'm still
> having issues.  One I would like to get solved asap is this SMTP issue. 
> This is Ubuntu Jaunty with postfix/dovecot.
> 
> I see messages like this very frequently (email addresses redacted) in the
> logs and the output of postqueue -p:
> 813404C5F7     2130 Tue Jun  2 03:47:36 
> particularization9-qIPW8QmpbdTTeotY1rLAZGXnswh1EIUO at public.gmane.org
> (delivery temporarily suspended: Host or domain name not found. Name
> service error for name=comcast.net type=MX: Host not found, try again)
>                                          XXXXX-Wuw85uim5zDR7s880joybQ at public.gmane.org
> 
> 809EE461A7     8687 Mon Jun  1 12:05:35  avengesp616-sdv56KyyKd+sTnJN9+BGXg at public.gmane.org
> (delivery temporarily suspended: Host or domain name not found. Name
> service error for name=acm.org type=MX: Host not found, try again)
>                                          XXXXX-HInyCGIudOg at public.gmane.org
> 
> and a bunch of other domains.
> 
> "digg acm.org mx" returns the list of MX servers.
> I can telnet to one or more of the XM servers on port 25.


What nameservers are you using for resolution? Have you
considered running your own, locally?

-dsr-


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