On Sun, 21 Sep 2014, Reindl Harald wrote:
Am 21.09.2014 um 04:08 schrieb John Hardin:
On Sun, 21 Sep 2014, Reindl Harald wrote:
Am 21.09.2014 um 03:29 schrieb John Hardin:
Would you care to share the spam that you posted the scores for at the start of this thread? There's not much we can do with just the rules that hit beside post vague guesses. The critical part is: which domain is that whitelisted DKIM signature for?

no message content available - we don't store anything on the gateway
3 cases with score -5 twice and one time -2

message-id=<....@xtinmta4208.xt.local
bounce-...@bounce.mail.hotels.com

OK, mail.hotels.com is in the default DKIM whitelist.

I haven't looked through the DKIM whitelist code but I note that def_whitelist_from_dkim supports specification of the domain in the DKIM signature, and the mail.hotels.com entry does not specify the signing domain.

Speculation: I wonder if it's possible that message was a forged hotels.com email signed with DKIM from *another domain* and that's why the default DKIM whitelist rule triggered.

Can someone with more familiarity with the details of DKIM comment on that possibility?

yes, please

all other "def_whitelist_from_dkim" looks sane in the logs and have -10 to -16 scores because no bayes hit and no other tags - only that 3 messages which looks questionable

Are all three of those messages related to hotels.com?


--
 John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
 jhar...@impsec.org    FALaholic #11174     pgpk -a jhar...@impsec.org
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