long SPF txt record
Lawrence K. Chen, P.Eng.
lkchen at ksu.edu
Thu Jun 20 17:24:23 UTC 2013
3.1.3. Multiple Strings in a Single DNS record
As defined in RFC 1035 sections 3.3.14 and 3.3, a single text DNS record (either TXT or SPF RR types) can be composed of more than one string. If a published record contains multiple strings, then the record MUST be treated as if those strings are concatenated together without adding spaces. For example:
IN TXT "v=spf1 .... first" "second string..."
MUST be treated as equivalent to
IN TXT "v=spf1 .... firstsecond string..."
SPF or TXT records containing multiple strings are useful in constructing records that would exceed the 255-byte maximum length of a string within a single TXT or SPF RR record.
----- Original Message -----
> Our email group wants to change the current SPF txt record and
> replace it with one that is 274 characters.
> How can I put it in so that it works correctly?
> Charles Koehler
> Network Operations - IT Infrastructure
> 500 Parnassus Ave P7-14
> San Francisco, CA 94143
> Email: charles.koehler at ucsf.edu
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Who: Lawrence K. Chen, P.Eng. - W0LKC - Senior Unix Systems Administrator
For: Enterprise Server Technologies (EST) -- & SafeZone Ally
Snail: Computing and Telecommunications Services (CTS)
Kansas State University, 109 East Stadium, Manhattan, KS 66506-3102
Phone: (785) 532-4916 - Fax: (785) 532-3515 - Email: lkchen at ksu.edu
Web: http://www-personal.ksu.edu/~lkchen - Where: 11 Hale Library
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