Greetings,

I'm working on implementing DKIM for our company's outbound email. We're
using dkim-milter 2.4.4 and Sendmail 8.13.8. One of the ways I'm testing
it is via the senderid.espcoalition.org testing service, e.g.:

[EMAIL PROTECTED]

When I send a DKIM-signed message to this address, the web-based report
tells me:

DKIM-Status: The algorithm rsa-sha256 is not supported (This signature
appears to be from an older draft of the standard)

Here is the DKIM signature:
DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=christianbook.com;
        s=relaydkim; t=1202314148; x=5497281443;
bh=DLQNdQgnJP6xfHXZ9V9uYyh
        86Cq89iTAUddcMMl/HwY=; h=DomainKey-Signature:From:To:Subject;
b=pGF
        
BKB51nW629d/+xbf9pabsZvSzCCpAZmqhvpKa+LnR8jHn7VE9fSlON7f0WDWeq0GLRn
        
fpocRRlTp+okdtSoxzbVB8Hb6bqF67a6iIqrE4RXOci02UqS/IZrujxtXnBoTNj0KI0
        vgyanhJ4U9/Bb3KDniitCVn0syOuHkGMnM=

If you would need to see additional headers, I can send those to you
off-list. (The host I'm testing DKIM on is different from the host I'm
sending this message with.)

>From reading the DKIM RFC, it looks like rsa-sha256 is the preferred
algorithm, so I'm not sure why using it would be an error message.

Any thoughts on this?

Thanks,

Peter

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