[Pdns-users] TXT record with embedded tab causes thread to die.

[Ruben d'Arco]

Hi Chris,

PowerDNS actually supports the SPF record type. Can you check if that works better for you?
The content should be the same as you have now.

Regards,
	Ruben


On Tue, Mar 27, 2012 at 09:43:27AM -0400, Christopher Pruden wrote:
> Hi,
> 
> I'm working on a PowerDNS setup, with the gpgsql backend, and think I'm running into ticket #356.  I tried this with 3.0.1 initially, and now 3.1rc1 (static RPM for both).
> 
> Initially, data was loaded by setting PowerDNS as a slave to a bind master, and using AXFR to get everything across.  This seemed to work well, although I've found a few records that ended up in the DB that can't be retrieved.  Specifically, it seems to be TXT records with an embedded tab (the greater than sign is the tab):
> 
> db=> select * from dns_record where name='example.com' and type='TXT';
> id    | zone_id |         name          | type |              rdata              | ttl | prio | change_date
> ---------+---------+-----------------------+------+---------------------------------+-----+------+-------------
> 2610172 |  269911 | example.com | TXT  | "v=spf1 a mx ip4:127.0.0.1>?all" | 300 |    0 |
> (1 row) 
> 
> 
> Querying bind: 
> 
> $ dig +short TXT example.com
> "v=spf1 a mx ip4:127.0.0.1\009?all"
> 
> 
> Querying PowerDNS:
> 
> $ dig  TXT example.com @10.30.152.98
> 
> ; <<>> DiG 9.7.3-P3 <<>> TXT example.com @10.30.152.98
> ;; global options: +cmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 45631
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
> ;; WARNING: recursion requested but not available
> 
> ;; QUESTION SECTION:
> ;example.com.>  >   IN> TXT
> 
> ;; Query time: 54 msec
> ;; SERVER: 10.30.152.98#53(10.30.152.98)
> ;; WHEN: Mon Mar 26 17:08:59 2012
> ;; MSG SIZE  rcvd: 39
> 
> 
> The logs show this (including embedded tab):
> 
> Mar 27 09:29:00 authdns1 pdns[28480]: AXFR of domain 'example.com' initiated by 10.30.152.99
> Mar 27 09:29:00 authdns1 pdns[28480]: TCP Connection Thread died because of STL error: Unable to parse DNS TXT '"v=spf1 a mx ip4:127.0.0.1	?all"'
> 
> 
> I actually have another case, as well, of not being able to parse a TXT record, that seems a bit different (I don't believe there are any embedded tabs or other characters in it):
> 
> Mar 27 09:29:00 authdns1 pdns[28480]: TCP Connection Thread died because of STL error: Unable to parse DNS TXT '"example.net.	 IN TXT	" "v=spf1" "a" "mx" "ip4:72.52.197.100" "~all" ""'
> 
> bookkeep=> select * from dns_record where name='example.net' and type='TXT';
>    id    | zone_id |       name        | type |                rdata                 | ttl | prio | change_date 
> ---------+---------+-------------------+------+--------------------------------------+-----+------+-------------
>  2395887 |  248632 | example.net | TXT  | "v=spf1 a mx ip4:127.0.0.100 ~all" | 300 |    0 |            
> (1 row)
> 
> 
> 
> 
> Does this seem like ticket #356 coming back?  Any ideas on workarounds for the time being?
> 
> Thanks in advance,
> Chris
>  
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