On 12/29/2011 01:00 PM, Stan Hoeppner wrote:
On 12/29/2011 5:23 AM, Thomas Bange wrote:
Hi,
I have a mail stuck in my mail queue. The Mail should be delivered to
some.u...@some-domain.de.
Looking up MX records for the domain gives me:
# host -t mx some-domain.de
some-domain.de mail is handled by 100 relay2.netnames.net.
some-domain.de mail is handled by 10 relay1.netnames.net.
Postfix is always attempting to deliver the mail through
relay2.netnames.net, which gives the following error:
host relay2.netnames.net[212.53.64.44] said: 451 lowest numbered MX
record points to local host (in reply to RCPT TO command)
The server seems to have a config problem, but why does Postfix tries to
deliver the mail through relay2.netnames.net instead of
relay1.netnames.net?
This is not a Postfix problem. You know how to use Google yes?
Given there is definitely a DNS configuration problem on the remote end,
do not assume Postfix is doing something incorrect by attempting
delivery to the priority 10 MX host.
If it's not a resolver cache issue you need to contact the
administrator(s) of the remote systems(s) and inform them of the problem.
The valid Postfix related question is why it doesn't try to use
relay1.netnames.net for delivery when relay2.netnames.net keeps
returning 451s.
$ telnet relay1.netnames.net 25
Trying 62.128.158.226...
telnet: Unable to connect to remote host: Connection refused
Answer: relay1 is not available, which should be logged by postfix too,
but the OP missed it somehow.
--
Tom
