[dkim-ops] Strange DKIM-Signature from Nature.com

[Byung-Hee HWANG]

Hi, i'm getting some newsletter from Nature.com via email. Someday i
reviewed the message's full header. But Google's Authentication-Results
is not "pass", always. See below:

Authentication-Results: mx.google.com; dkim=neutral (no key)
header.i=Nature_Genetics at ealert.nature.com

After all, i did lookup the DNS record:

bh at betla:~> host -t txt spop._domainkey.ealert.nature.com.
spop._domainkey.ealert.nature.com descriptive text "g=\; k=rsa\; p=MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBANMBiUkXYp9f7TOnApM/HmiMZh3YyiGJDO8uCKNVO7Zm2wvr63IrX8oZSgLxUqxKPvNz7/QZlYboCLrdJXObLHMCAwEAAQ==" ""
bh at betla:~> 

In addition, Nature.com is using PowerMTA (v3.5r8) for DKIM-Signature ;;

What do you think of?
 
-- 
Byung-Hee HWANG, KNU 
∑ WWW: http://izb.knu.ac.kr/~bh/