Spam filtering

Access path

Domain Email -> Email Manage -> Spam Filtering

Filter method

SPF Verification

The SPF is an e-mail authentication mechanism to confirm whether an email is sent out to the authorized server and to prevent people from impersonating a true sender. The SPF generally sets the TXT record to set the IP or IP range of outgoing mail servers. If a mail is sent from a non-above-mentioned IP address, it is assumed to be a forgery email to be discarded, unauthenticated mail will be discarded.

DKIM Verification

DKIM is an email authentication mechanism. The public key provides digital signature and identity authentication functions to check whether the sender, subject, content, attachments, etc. have been forged or tampered with. The sender will insert DKIM-Signature and electronic signature information in the email header. The receiver will verify the public key after obtaining it through DNS query After it is turned on, emails that fail to pass the verification will be discarded

Content Filtering

Content filtering is a spam mailbox content filtering system that verifies the mailbox content to determine whether the email content is spam After it is turned on, emails that fail the verification will be filtered into the spam folder.