The problem was a broken /etc/apt/sources.list in debian.
Someone changed one of the repositories to wheezy, and left the others as
squeeze.
A broken package dependency made the postfix resolver stop working,
apparently.
After the system was fully upgraded to wheezy, postfix started working as
expe
On 6/29/2013 7:15 AM, Wietse Venema wrote:
> T?ssio Fechine:
>> What!? How the user running the client library affects DNS response? This
>> makes no sense.
>
> This is a frequent problem with novice system administrators
> who mess up file or directory access permissions.
>
> If a program doesn'
T?ssio Fechine:
> What!? How the user running the client library affects DNS response? This
> makes no sense.
This is a frequent problem with novice system administrators
who mess up file or directory access permissions.
If a program doesn't run as root, then the tests should not
be done as root.
On 06/28/2013 11:50 PM, Téssio Fechine wrote:
var/log/mail.log:Jun 28 18:25:43 rt-dq postfix/smtpd[4931]: NOQUEUE:
reject: RCPT from unknown[209.85.219.66]: 450 4.7.1 Client host
rejected: cannot find your hostname, [209.85.219.66];
from=mailto:tess...@gmail.com>>
to=mailto:nti-ad...@quimica.u
T?ssio Fechine:
> var/log/mail.log:Jun 28 18:25:43 rt-dq postfix/smtpd[4931]: NOQUEUE:
> reject: RCPT from unknown[209.85.219.66]: 450 4.7.1 Client host rejected:
> cannot find your hostname, [209.85.219.66]; from=
> to= proto=ESMTP helo=
Wietse:
> > If you don't like that don't use reject_unknown
I use reject_unknown_client_hostname at many email servers. Only this one
is having a problem.
Why DNS is bad if nslookup works fine?
2013/6/28 Wietse Venema
> T?ssio Fechine:
> > var/log/mail.log:Jun 28 18:25:43 rt-dq postfix/smtpd[4931]: NOQUEUE:
> > reject: RCPT from unknown[209.85.219.66]:
T?ssio Fechine:
> var/log/mail.log:Jun 28 18:25:43 rt-dq postfix/smtpd[4931]: NOQUEUE:
> reject: RCPT from unknown[209.85.219.66]: 450 4.7.1 Client host rejected:
> cannot find your hostname, [209.85.219.66]; from= to=<
> nti-ad...@quimica.ufpb.br> proto=ESMTP helo=
If you don't like that don't us
var/log/mail.log:Jun 28 18:25:43 rt-dq postfix/smtpd[4931]: NOQUEUE:
reject: RCPT from unknown[209.85.219.66]: 450 4.7.1 Client host rejected:
cannot find your hostname, [209.85.219.66]; from= to=<
nti-ad...@quimica.ufpb.br> proto=ESMTP helo=
Then, at this exactly mail server machine:
# nslooku
