[Mailman-Users] Yahoo, AOL again

Mark Sapiro mark at msapiro.net
Sun Nov 18 17:48:31 EST 2018

On 11/18/18 1:51 PM, Jim Dory wrote:
>  " <user>@yahoo.com
>     host mta5.am0.yahoodns.net []
>     SMTP error from remote mail server after pipelined MAIL FROM:<
> nome-announce-bounces at nomekennelclub.com> SIZE=7608:
>     421 4.7.0 [TSS04] Messages from temporarily deferred due
> to user complaints -; see
> https://help.yahoo.com/kb/postmaster/SLN3434.html:
>     retry timeout exceeded"

The Yahoo page at <https://help.yahoo.com/kb/postmaster/SLN3434.html>
has some tips. You may need to adjust the retry strategy of your MTA.

> I'm also getting a few bounces from .me and .icloud accounts.. But that may
> be a different issue.. I don't know:
> " <user>@me.com
>     host mx3.mail.icloud.com []
>     SMTP error from remote mail server after end of data:
>     550 5.7.1 [CS01] Message rejected due to local policy. Please visit
> https://support.apple.com/en-us/HT204137"

Apple has recently started publishing p=quarantine for its
{mac|me|icloud}.com domains. If you don't include p=quarantine
(dmarc_quarantine_moderation_action = Yes) in your DMARC mitigations,
you need to do so.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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