5.7.4 means "you told us not to accept your mail unless it was validly
signed and it is not".
The solution for this is to make sure that mail with a From: in a domain
that requires this is validly signed.
Yahoo does not care whether you use DKIM or DomainKeys for this purpose;
other people may well like DKIM better, making it more fun.
I note that the help page you reference mentions DKIM and DomainKeys
together every time.
If your LISTSERV
-- gets mail from somebody with a domain that requires their mail to be
validly signed (for instance, via DMARC)
-- leaves that sender's address in the From: line
-- and breaks the DKIM signature
then the mail will not deliver to recipients at Yahoo. Your choices are:
-- ask (or force) the sender to join the LISTSERV from a sending domain
that does not do this
-- modify the From: to not be in the sender's domain
-- avoid breaking the DKIM signature
-- let the mail fail
Elizabeth
On 2/28/14 2:51 PM, "Matthew Black" <[email protected]> wrote:
>Apologies if I slept through prior discussions on the topic.
>
>
>
>E-mail from our L-Soft LISTSERV was recently rejected by Yahoo with the
>following error:
>
>
>
>#####@YAHOO.COM
>
> Last error: 5.7.9 554 5.7.9 Message not accepted for policy reasons.
>See http://postmaster.yahoo.com/errors/postmaster-28.html
>
>
>
>I note:
>
>
>
>1. The e-mail error (5.7.9) references the link
>http://postmaster.yahoo.com/errors/postmaster-28.html.
>
>2. That Yahoo page does not mention error 5.7.9, but references a
>similar error 5.7.4 "Message not accepted for policy reasons."
>
>3. It appears that Yahoo wants inbound messages signed using
>DomainKeys technology.
>
>4. Yahoo is the lead inventor of DomainKeys, along with Cicso, PGP,
>and Sendmail.
>
>5. L-Soft LISTSERV manuals and Yahoo both refer to the website
>http://domainkeys.sourceforge.net/.
>
>6. When I click on the Documentation and DomainKeys Implementors
>Mailing List links on that page, I get page not found.
>
>7. A 2007 USA Today Article
>(http://usatoday30.usatoday.com/tech/products/cnet/2007-05-23-domainkeys-a
>nti-spam_N.htm) mentions that DomainKeys have not been widely adopted.
>
>8. A basic Google search for DomainKeys comes up with no recent
>articles. One website
>(http://blog.wordtothewise.com/2011/09/dkim-is-done/) says that
>DKIM/DomainKeys are dead.
>
>
>
>
>
>Are the rumors of the death of DomainKeys premature? If not, is anyone
>from Yahoo listening?
>
>
>
>matthew black
>
>california state university, long beach
>
>
>
>
