On Fri 18/Mar/2022 17:11:56 +0100 John R Levine wrote:
Repeating the tree walk, we'd get a different result if we find psd=y at
_dmarc.f.c.d. Is that realistic?
Yes, of course it is. Look at some of the PSL entries.
I may be dumb, but I stared at the PSL for a few minutes and couldn't think
of non-aligned subdomains of an org domain.
Look at these two:
repl.co
id.repl.co
so the example would be a.b.repl.co and c.id.repl.co
Let me use the PSL, as it works with fictitious domains. I could find the org
domain like so:
ale@pcale:~/tmp/zdkimfilter/svn/src$ ./TESTpublicsuffix
../no-svn/public_suffix_list.dat a.b.repl.co
a.b.repl.co -> b.repl.co
So b.repl.co is the org domain. c.id.repl.co doesn't end with that string,
therefore it is not aligned.
I could also have run this:
ale@pcale:~/tmp/zdkimfilter/svn/src$ ./TESTpublicsuffix
../no-svn/public_suffix_list.dat c.id.repl.co
c.id.repl.co -> c.id.repl.co
and conclude that it is not aligned because its org domain differs. However,
string comparison is easier, no?
Best
Ale
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