Is it easy to introduce on a small scale

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" Authenticating outgoing email Not to send unsolicited or spam emails Allow recipients to easily unsubscribe from emails Authenticating outgoing email First, let's talk about authenticating outgoing emails. In order for the destination mail server to check whether the sent email is a valid email, authentication settings for outgoing emails are required. Specifically, there are three ways to set this up: Email authentication settings using Sender ID/SPF Setting up email authentication with DKIM Email authentication settings with DMARC By the way, even if you do not send more than 5,000 emails per day, you will need to set up one of the following authentication settings.


Sender ID/SPF email authentication settings associated uganda telegram database with the sender domain DKIM Email Authentication Settings with Author Signature Let's take a closer look at the authentication settings for "Sender ID/SPF", "DKIM", and "DMARC". Sender ID/SPF Email Authentication Settings (All Senders) Sender ID/SPF (short for Sender Policy Framework) is a "sender domain authentication technology" that can verify whether the domain of the sender information is legitimate based on the IP address of the sender of the email. It checks the [IP address of the sender of the email] against the [IP address information set in the DNS (short for Domain Name System) server] of the sender address domain (the part after the @ mark) to determine whether the email was sent from a legitimate email server.


(Note) There are different names depending on the DNS that is evaluated. The system that evaluates based on the envelope From (Envelope-From: notification destination in case of delivery error) domain is called SPF, and the system that evaluates based on the header From (Header-From: displayed as the sender in the email app) domain is called Sender ID. Since both are evaluated based on the content registered as SPF on DNS, they are sometimes written together as Sender ID/SPF, or collectively referred to as SPF.