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About davecb@spamcop.net

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  1. davecb@spamcop.net

    DMARC breaking email forums

    Just FYI, I'm now getting spam with proper DKIM (DMARC) headers, such as From - Tue May 06 09:48:23 2014 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; s=DKIM1; d=surepays.biz; h=To:Subject:Message-ID:Date:From:Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; i=postmaster[at]surepays.biz; bh=ugh6/2lwABu45cirXV1N2M/+peE=; b=FBPFUOjoX3L5JPvmjZG4tf4M/C5umMVUrKso+panJDwk4asI3tcCRY4Z4JYMI7aIan6APzhCiBN9 vnSu+mvviRfQJunq3DkUXy6eaGyPttvPprQCVUNl1wLshMOPSvwFx9oSd0pFgkFHgCix7sMOCRKu iuZDHQYyjcxIBrb+1D8= DomainKey-Signature: a=rsa-sha1; c=nofws; q=dns; s=DKIM1; d=surepays.biz; b=ILcsO4H3KJyI3B/3WXREaX0TGmsRpLV0DvLh6Ynpd3xBpTzmCkLQV5GbEOLQIRwM+CKq95bK7zLp 1yQP6RKd/1XauIHuC8oCKQvW4GHG4nE8bNySCGBNQLBy2+nzgSvOt1CM3wLNJM0I65DFH3fV3klc Mm4u3ZNP9R4XYAlD4Cs=; The Yahoo change was the weekend of April 12th The workaround was seen the following Monday, The first forged headers were seen on May 2, sent via a Google Groups bug It's now May 6