Laposte.net will be requiring all email be authenticated

Starting on September 9th laposte.net will begin requiring email to have valid, aligned authentication. Mail that isn’t authenticated will start to be delivered to the spam folder or rejected at delivery time.

Full details should be published on Laposte’s postmaster page in the next few days but the gist of it is that you must have either SPF that passes and is aligned with the 5322 From: header or a DKIM signature that validates and is aligned with the 5322 From: header.

(Or both. Both is good.)

This will apply to most email, not just bulk email.

If you’ve already done the work to follow Gmail and Yahoo’s requirements for bulk senders then you’re already in compliance at laposte.

Yahoo's mailboxes are full
Changes happen, even if you don't keep up

Related Posts

Why is DMARC failing?

Multiple times over the last few weeks folks have posted a screenshot of Google Postmaster tools showing some percentage of mail failing DMARC. They then ask why DMARC is failing. Thanks to how DMARC was designed, they don’t need to ask anyone this, they have all the data they need to work this out themselves.

Read More

Some Microsoft thoughts

Right at the end of January, Microsoft appears to have made couple of changes to how they’re handling authentication. The interesting piece of this is that, in both cases, Microsoft is taking authentication protocols and using them in ways that are slightly outside the spec, but are logical extensions of the spec.

Read More

Wildcards and DKIM and DMARC, oh my!

If you’re an ESP with small customers you may have looked at the recent Google / Yahoo requirements around DMARC-style alignment for authentication and panicked a bit.

Read More