On Tue, Oct 17, 2023 at 9:51 PM Douglas Foster < dougfoster.emailstanda...@gmail.com> wrote:
> Why do we need to support relaxed alignment at all? > > A common use case for relaxed alignment is when an organization (e.g., WeSellStuff) employs a third party Email Service Provider (e.g., WeSendEmail) to send mail on the organization's behalf. In that case, we might have the following: Return-Path domain: bounces.wesellstuff.com DKIM signing domain: wesendemail.wesellstuff.com RFC5322.From domain: marketing.wesellstuff.com The above configuration allows for WeSendEmail to manage the SPF record for bounces.wesellstuff.com and for an MX record for bounces.wesellstuff.com to be pointed at WeSendEmail, so that they can handle bounce processing and other Delivery Status Notifications. It also allows for WeSendEmail to DKIM sign on behalf of WeSellStuff using a dedicated subdomain that is delegated to WeSendEmail, which can publish the public key in DNS and generate the private key and keep it private to use for signing mail it sends. Meanwhile, WeSellStuff only has to delegate responsibility for those parts of the DNS that are specific to WeSendEmail's sending to WeSendEmail. -- *Todd Herr * | Technical Director, Standards & Ecosystem *e:* todd.h...@valimail.com *p:* 703-220-4153 *m:* 703.220.4153 This email and all data transmitted with it contains confidential and/or proprietary information intended solely for the use of individual(s) authorized to receive it. If you are not an intended and authorized recipient you are hereby notified of any use, disclosure, copying or distribution of the information included in this transmission is prohibited and may be unlawful. Please immediately notify the sender by replying to this email and then delete it from your system.
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