preferred mx

Hello!

I try to deliver mail to a domain with 3 mx (all the same priority). Now
the first mx seems to be down ( deferral:
Sorry,_I_wasn't_able_to_establish_an_SMTP_connecti on) but instead of
jumping to the next mx (which is up and running) qmail tries to deliver
it to the first mx in the list again and again. Is this a bug or wanted
or did i configure smthg wrong ?

regards
Christoph

CC> [...] a domain with 3 mx (all the same priority).

Go to the machine running "qmail-remote" and, from there, attempt to prove
that this is in fact the case.

Jonathan de Boyne Pollard schrieb:
> CC> [...] a domain with 3 mx (all the same priority).
>
> Go to the machine running "qmail-remote" and, from there, attempt to prove
> that this is in fact the case.
i did a mx-querry, 3 mx hosts and all set to 20, from other servers it
works fine btw.

CC> [...] a domain with 3 mx (all the same priority).

JdeBP> Go to the machine running "qmail-remote" and, from
JdeBP> there, attempt to prove that this is in fact the case.

CC> i did a mx-querry, 3 mx hosts and all set to 20, [...]

Now do the second part of the lookup and perform the "A" queries.

Prove that you are not manually overriding the DNS with your
"control/smtproutes" file, as well.

Jonathan de Boyne Pollard schrieb:

> CC> [...] a domain with 3 mx (all the same priority).
>
> JdeBP> Go to the machine running "qmail-remote" and, from
> JdeBP> there, attempt to prove that this is in fact the case.
>
> CC> i did a mx-querry, 3 mx hosts and all set to 20, [...]
>
> Now do the second part of the lookup and perform the "A" queries.
>
> Prove that you are not manually overriding the DNS with your
> "control/smtproutes" file, as well.
done that, works fine, all 3 mx have valid A Records too, i can ping and
traceroute them without problems (by hostname and ip). smtproutes is
clean. I try to set a smtproute for this domain, maybe that will be
workarround.

regards
Christoph

CC> [...] all 3 mx have valid A Records too, i can ping and
CC> traceroute them without problems (by hostname and ip).
CC> smtproutes is clean.

Now, whilst on that same machine, prove that one can connect from it via TCP
to port 25 on at least one of those IP addresses, and that none of the IP
addresses that you can successfully connect to are listed in the output of
"qmail-tcpto".