On 05/15/14 11:15, Larry Finch wrote:
On May 15, 2014, at 10:53 AM, Gary Algier <g...@ulticom.com> wrote:
On 05/14/14 23:47, Stephen J. Turnbull wrote:
I then sent an email to the list and to my work sendmail address. It was
delivered to both work addresses and the iCloud address.
Gmail put it in my Spam folder with the warning:
-------------------------------------------------------------------
Be careful with this message. Our systems couldn't verify that this message was
really sent by yahoo.com. You might want to avoid clicking links or replying
with personal information.
-------------------------------------------------------------------
There is also a link to their "Why messages are marked as Spam" page.
On Yahoo I found the bounce in my Spam folder with the following:
-------------------------------------------------------------------
This is an automated message from the Extensible Content Security
at host wg.ulticom.com.
The message returned below could not be delivered to its intended
destinations.
It seems that in the case of a simple Exchange distribution list, the Yahoo
members will fail (into their Spam folder!), some others may fail depending
upon their service's SPF fussiness, and others may have to root around in their
Spam folders for the content.
On the lists that I manage on listserv I’ve discovered that many ISPs honor Yahoo
and AOL’s p=reject, and will not even put the message in the spam folder. Among
them are: Comcast, SBCGlobal, AT&T, AOL, Rogers, Earthlink, Hotmail and a few
others I don’t recall. So essentially half of my list members will not get posts
from Yahoo or AOL.
best regards,
Larry
--
Larry Finch
finc...@portadmiral.org
Apparently, simple Exchange distribution lists do not rewrite headers or touch
the body so DKIM passes. However, the distribution lists also do not change
the envelope sender so the SPF fails. In order to get through DKIM, the
internal author address ("From: ") and a bunch of other headers must stay the
same, which Exchange does. Most mailing list software rewrites something,
which makes DKIM fail. However, the mailing list software will use an
envelope address from the list so SPF should not fail.
Summary:
Can't use Exchange distribution lists: SPF will fail.
Can't use mailing list software without changing the author, etc.: DKIM will
fail.
Time for sendmail aliases? Or perhaps, SPF will fail?
--
Gary Algier, WB2FWZ g...@ulticom.com +1 856 787 2758
Ulticom Inc., 1020 Briggs Rd, Mt. Laurel, NJ 08054 Fax:+1 856 866 2033
Nielsen's First Law of Computer Manuals:
People don't read documentation voluntarily.
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