Domain Email -> Email Manage -> Spam Filtering
SPF is an email authentication mechanism that verifies whether an email is sent from an authorized server, preventing others from impersonating the real sender. SPF is generally configured with a TXT record to specify the IP addresses or IP ranges of mail-sending servers. If an email is sent from an IP address outside the specified range, it is considered forged.
After enabled, emails that fail verification will be discarded.
DKIM is an email authentication mechanism that uses a public key to provide digital signatures and identity verification, checking whether the sender, subject, content, attachments, and other parts have been spoofed or tampered with. The sender inserts DKIM-Signature and digital signature information into the email header, and the recipient verifies it after obtaining the public key through a DNS query.
After enabled, emails that fail verification will be discarded.
Content filtering is a spam email content filtering system that determines whether an email is spam by checking the email content.
After enabled, emails that fail verification will be filtered into the spam folder.