On 12/13/2012 7:53 AM, Robert Joosten wrote:
> Hi,
> 
> #currently investigating a masive mailbounce
> 
> I'm running postfix 2.9.4 on freebsd boxen.
> 
> Is it intentional that a transportmap reading in the form
> 
> <domain> etrn-only:<hostname>
> 
> intentionally ignores the A record of <hostname>?


Some possibly related doc snippets;

http://www.postfix.org/transport.5.html
...
In the case of SMTP, specify  a  service  on  a
non-default  port  as  host:service,  and disable MX (mail
exchanger) DNS lookups with [host] or [host]:port


http://www.postfix.org/postconf.5.html#smtp_address_preference
...
The setting "smtp_address_preference = ipv6" is unsafe. It can fail
to deliver mail when there is an outage that affects IPv6, while the
destination is still reachable over IPv4.


Sorry for the generic help, but that kind of goes along with the
generic problem report.  If you need more help, please see
http://www.postfix.org/DEBUG_README.html#mail




  -- Noel Jones

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