"From" domain is rarely used for reputation directly, usually authenticated domains (SPF that is envelope-from and DKIM domains) are used, but currently it's quite important for From domain to be authenticated regardless of DMARC, that is it must be aligned with at least one of SPF/DKIM domains, so it's generally bad idea to allow From domain without authentication even if DMARC policy is not published. You can use another CNAME delegation (on allow customer to publish a DKIM key) to DKIM sign message with delegated domain. Best practice here is to use 2 DKIM signature (onefor your domain to share a reputation and one aligned with From domain). Also, you can use CNAME delegated domain for envelope-from.
20.08.2018 19:34, Penny Gray via mailop пишет: > Hi folks 👋, > Was hoping to get some input on sending reputation. We’re looking to > make some changes to how we identify our senders in outbound mail. Our > senders do have options for CNAME delegation so we can identify their > mail, but it’s not enforced and lots of people still use our shared > domain. In this case we assign the sender a subdomain of our sending > domain intercom-mail.com > <http://intercom-mail.com> e.g: bob.lob...@bobscompany.intercom-mail.com > <mailto:bob.lob...@bobscompany.intercom-mail.com>. The reputation of > the organisational domain is always at risk this way. > > We want to let the sender put their verified address > (e.g: bob.lob...@bobscompany.com <mailto:bob.lob...@bobscompany.com>) > in the From header (provided the domain doesn’t have DMARC enabled). > It seems it’s what most big players do (Mailchimp, Sendgrid etc). > > Do you know *how much reputation is attributed to the From header as > opposed to the Envelope From and other parts of the message*? I know > each ESP/blacklist is different but do you know of any resources you > could point me to for this? > > Kind Regards, > Penny-Merelle Gray > Team-Delivery > pe...@intercom.io <mailto:pe...@intercom.io> > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Vladimir Dubrovin @Mail.Ru
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