It means the recipient doesn't want your mail, is careless, or doesn't exist any more.
On 7 March 2013 09:36, <[email protected]> wrote: > On Wed, March 6, 2013 6:18 pm, chris wrote: >> I am no expert - but I _think_ that the configuration files and the >> behaviour of commands like ping and host do make sense. In particular, > >> But your main problem lies with Postfix, and that is a whole different >> can of worms. The command 'postconf -d' reveals several configuration >> items relating to 'resolve' and 'dns'. Furthermore I found this link: >> >> http://www.linuxquestions.org/questions/linux-software-2/force-postfix-to >> -refer-etc-hosts-857662/ > >> which I think describes your problem - and supplies an answer. Hopefully >> it will help... > > Chris, > > many thanks, I'll follow this up later today > > though, perhaps I'm attempting 'wrong workaround', solving wrong problem, > let me describe my original problem: > > this VPS/Postfix in use about 1 year, no known issues, runs multiple > domains, MX, all good, handles several thousands emails daily > > few weeks ago mails addressed to one particular domain failed with: > > -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- > EAB18382A0C 1272 Sat Mar 2 13:04:00 [email protected] > (Host or domain name not found. Name service error for > name=cleanmail02.cdsoft.ie type=A: Host not found, try again) > [email protected] > > I've confirmed MX: > > #dig -t mx pinewood.ie > > ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-16.P1.el5 <<>> -t mx pinewood.ie > ... > ;; QUESTION SECTION: > ;pinewood.ie. IN MX > > ;; ANSWER SECTION: > pinewood.ie. 3577 IN MX 20 cleanmail02.cdsoft.ie. > pinewood.ie. 3577 IN MX 10 cleanmail01.cdsoft.ie. > .. > > BUT, when I try host look up on cleanmail01.cdsoft.ie, I got: > > #host cleanmail01.cdsoft.ie > ;; connection timed out; trying next origin > Segmentation fault (core dumped) > > so, that's when I thought of creating /etc/host lookup.... > > but, my issue is really why can't I resolve on this host...? > > is this some ipv4/ipv6 issue ? > > thanks for any pointers and suggestions, thanks for all the help thus far > > > > -- > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Christopher Vance -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
