From mboxrd@z Thu Jan 1 00:00:00 1970 From: Uffe Jakobsen Date: Tue, 24 Jun 2014 13:41:11 +0000 Subject: Re: [mlmmj] mlmmj and DKIM Message-Id: <53A97FF7.8080209@uffe.org> List-Id: References: <53A949B5.8070300@uffe.org> In-Reply-To: <53A949B5.8070300@uffe.org> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: mlmmj@mlmmj.org On 2014-06-24 13:19, Chris Knadle wrote: > On Tuesday, June 24, 2014 12:08:41 Uffe Jakobsen wrote: >> On 2014-06-24 12:00, Yuri D'Elia wrote: >>> On 06/24/2014 11:49 AM, Uffe Jakobsen wrote: >>>> Their posts to the lists gets rejected by receiving parts (sites) that >>>> check for DKIM validity - hotmail.com being one site that seem to reject >>>> the most. >>>> >>>> One approach would be to setup proper SRS - I guess - but the number of >>>> lists and users that I have are quite low - and hence i was looking for >>>> an "easier" solution... >>>> >>>> Any suggestions - How do you approach such problems ? >>> >>> Yes, either just forward the message (do not change the content/reply-to >>> or anything else) or strip DKIM-Signature from incoming messages (using >>> delheaders). >>> >>> The latter will not work if DMARC is being used, but I didn't have >>> problems so far. YMMV. >> >> Well, I've tried both your suggestions >> >> The sending domain in question is @post11.tele.dk - and in that >> combination the most problems is seen with recipients @hotmail.com >> >> 1) Plain forwarded messages from DKIM domains are rejected by hotmail. I >> guess that they look at MAIL FROM and RCPT TO as well.... >> >> 2) Stripping DKIM headers does not seem til help either - hotmail.com >> still rejects. > > > It looks like tele.dk is another domain that is now using DMARC with > "p=reject" like AOL and Yahoo:( are. Here's the test as to why I think that's > what's going on: > > $ dig _dmarc.tele.dk txt +short > "v=DMARC1\; p=reject\; sp=none\; pct0\;" > Ok, I need to read up on DMARC... Would such DMARC record as stated above have an effect on a subdomain as @post11.tele.dk ? /Uffe