Bind + DKIM (ran out of space)

[Mark Andrews]

> The original message was garbled, but I can guess the question from  
> the subject line.
> 
> The original poster was trying to create DKIM-related TXT records, but  
> did not format the record data in the form of multiple strings of up  
> to 255 characters each.
> 
> A TXT record takes one or more string literals in the data. Each  
> string is limited to 255 characters. So for values larger than that,  
> it is necessary to break them into smaller strings. DKIM processing  
> should tolerate this, and BIND certainly does. (I've been unable to  
> find an upper limit to the total data size or number of strings. I  
> gave up after exceeding 8 KB, using 33 strings of 255 characters each.  
> I have not checked the source code, of course.)

	named supports up to the maximimal DNS message of 65535 bytes.

	For a single TXT record at the root that would give you 65507
	(65535 - 12 (header) - 5 (question) - 11 (answer before rdata))
	bytes of rdata.

	Mark

 
> Chris Buxton
> Professional Services
> Men & Mice
> 
> On May 2, 2008, at 10:44 AM, Laurent Archambault wrote:
> 
> > ée£ó2)ìÿ¢þ)ÁŠwb²«{û^²ßÿjwr¢çžÇž›&âÙh§íz¿ôÛóËý 
> > ´ÓÍ<ÿÿãÏ÷ïHêÚ—÷«®Šÿv{ÿ Ö k÷ë¢k^Æßé®/Ú Èbÿ:'{ýûÿúÚž‹ ¡û)iÇÿýÚ&j)ä{/ 
> > Ú Èbý© üƒS]?í
> >
> 
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org