New Gmail Email Sender Guidelines
Google has announced new guidelines for Gmail to enhance email sending security. These guidelines recommend setting up email authentication technologies such as SPF, DKIM, and DMARC. This aims to prevent email spoofing and spam, and to increase the reliability of legitimate email senders.
How to Use This Tool
To comply with Google's new Gmail guidelines, it's important to ensure proper setup of SPF, DKIM, and DMARC. By simply entering a domain, this tool allows you to easily check if these settings are correctly configured. This helps to enhance email sending security in line with the guidelines.
How to Check
Follow these steps to check:
- Enter the domain name.
- Enter the DKIM selector if necessary.
- Click the "Check" button.
- The results will be displayed, showing the status of SPF, DKIM, and DMARC settings.
Use this tool to ensure the reliability of your email sending and to configure settings in compliance with Google's guidelines.
SPF Record
SPF (Sender Policy Framework) is an email authentication method that specifies which mail servers are permitted to send email on behalf of a domain.
DKIM
DKIM (DomainKeys Identified Mail) is a technology that authenticates the sender of an email and verifies that the email has not been altered. It uses public-key cryptography to sign emails.
DMARC
DMARC (Domain-based Message Authentication, Reporting & Conformance) is a policy that combines SPF and DKIM to prevent email spoofing.
DNS
DNS (Domain Name System) translates domain names into IP addresses, allowing users to access websites using easily remembered domain names.
Domain
A domain is the address on the internet that corresponds to a specific website or email server. Example: digrart.jp
TXT Record
A TXT record is a type of DNS resource record used to store text information in the DNS. It is used for settings such as SPF and DKIM.
Email Authentication
Email authentication is the process of verifying that the communication partner is legitimate. In email authentication, the authenticity of the sender is verified to prevent spoofing.
Public-Key Cryptography
Public-key cryptography is a type of cryptography that uses a pair of keys (public and private) to encrypt data and protect its integrity. It is used in DKIM.
Spoofing
Spoofing is the act of sending emails pretending to be from a legitimate sender. SPF, DKIM, and DMARC are technologies that help prevent spoofing.
Email Header
An email header contains information about the sender, recipient, subject, date, and other details of the email. SPF and DKIM information are also included in the header.
