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Re: Multiple txt records?

2004-08-02 10:18:12
In <1091464869(_dot_)410e6ea5b84d2(_at_)webmail(_dot_)no-ip(_dot_)com> Dan 
Durrer <dan(_at_)vitalwerks(_dot_)com> writes:

Thanks..  Looks like  we just do multiple strings in the same record.  
Stinks, 
that spf record takes up valuble strlen :(


I have done a couple of surveys over a list of 1.3 million domain
names found on a spammer's list.  (The spammer was kind enough to
leave their website open and I snarfed it.)  I've posted the results
here and to the IETF MARID list, but basically what I found is that:

1) The vast majority of SPF records are very short, so that they don't
   take up much of that "valuable strlen".

2) Since last December when the push started for people to publish SPF
   records, SPF records have become THE most common type of TXT record
   at the domain level.  There really isn't much else using up any of
   that "valuable strlen".

3) SPF uses a distinct "magic number" similar to the Unix file magic
   numbers ot make sure that pre-existing usages of TXT records do not
   cause problems and so that SPF records can be easily filtered out
   if you don't want them.  The pre-existing uses of TXT records do
   not come close to colliding with SPF records.


-wayne


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