I've just had a very strange bug which cost me an hour to find.
mailserver: postfix-2.5.1-28.5
On the mailserver, I should receive mail from 212.69.162.205.
# dig -x 212.69.162.205
showed me a correct, existing PTR:
205.192-28.162.69.212.in-addr.arpa. 3600 IN PTR protegate5.zmi.at.
Just the for
* Michael Monnerie :
> I've just had a very strange bug which cost me an hour to find.
>
> mailserver: postfix-2.5.1-28.5
>
> On the mailserver, I should receive mail from 212.69.162.205.
>
> # dig -x 212.69.162.205
> showed me a correct, existing PTR:
> 205.192-28.162.69.212.in-addr.arpa. 3600
Michael Monnerie:
> I've just had a very strange bug which cost me an hour to find.
>
> mailserver: postfix-2.5.1-28.5
>
> On the mailserver, I should receive mail from 212.69.162.205.
>
> # dig -x 212.69.162.205
> showed me a correct, existing PTR:
> 205.192-28.162.69.212.in-addr.arpa. 3600 IN
On Donnerstag 27 August 2009 Wietse Venema wrote:
> And this was logged when a reverse hostname resolved to the wrong IP
> address:
>
> Aug 26 00:26:12 spike postfix/smtpd[13393]: warning:
> 61.135.132.106: address not listed for hostname
> relay2nd.mail.sohu.com
Thank you for clarification. I
On Donnerstag 27 August 2009 Stefan Förster wrote:
> This is often reffered to as "forward confirmed reverse DNS":
> http://en.wikipedia.org/wiki/Forward_Confirmed_reverse_DNS
I know, I'm the one who set it up ;-)
> The log text ist correct. A host with an IP resolved to
> "protegate5.zmi.at" con
On Donnerstag 27 August 2009 Wietse Venema wrote:
> And this was logged when a reverse hostname resolved to the wrong IP
> address:
>
> Aug 26 00:26:12 spike postfix/smtpd[13393]: warning:
> 61.135.132.106: address not listed for hostname
> relay2nd.mail.sohu.com
I just found a good logging ex
* Michael Monnerie :
> I just found a good logging example with the nfs server:
> rpc.mountd: Fake hostname ipmi-p4u.zmi.at for 212.69.162.206 - forward
> lookup doesn't exist
> That statement makes it clear, and would be a nice message for postfix
> also.
Didn't Wietse write that code?
--
Ra
Michael Monnerie:
> On Donnerstag 27 August 2009 Wietse Venema wrote:
> > And this was logged when a reverse hostname resolved to the wrong IP
> > address:
> >
> > ? ? Aug 26 00:26:12 spike postfix/smtpd[13393]: warning:
> > 61.135.132.106: address not listed for hostname
> > relay2nd.mail.sohu.com
