[opendmarc-dev] opendmarc failed on a mail from Commerco.Com

[Andreas Schulze]

Am 24.01.2013 18:10 schrieb Andreas Schulze:
> after the finale "dot" my dnsresolver is bombed with queries to v=spf1 redirect=_spf.Commerco.Com. type TXT

I modified my resolver to anwer TXT queries for "_dmarc.example.com." with "some sample sting" ...
[ unbound is cool :-) ]

Now I inject a message via smtp, sender "foo at example.com".
opendmarc fire 4 queries:
unbound[11302:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[11302:0] query: 127.0.0.1 some?sample?string. TXT IN
unbound[11302:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[11302:0] query: 127.0.0.1 some?sample?string. TXT IN

Why does opendmarc ask for a string it got as a response?

Next I modified the answer: not "some sample string" but the same text as the query itself:
# dig _dmarc.example.com. txt +short
"_dmarc.example.com"

Same message sent again and: bum! Same query again ang again. cpu load 100%; kill -9;
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN
unbound[15842:0] query: 127.0.0.1 _dmarc.example.com. TXT IN

Hope that helps ...

Andreas