I.What is an SPF?

SPF (Sender Policy Framework) is an email authentication technology that verifies a sender’s identity based on their IP address. It is a highly effective solution for preventing spam emails.
The receiving mail server will first check the domain’s SPF record to determine whether the sender’s IP address is included in that record. If it is, the email is considered legitimate; otherwise, it is treated as forged and will be bounced.

II. How to Set Up SPF for Business Email?

SPF is configured via the TXT record of your domain.

To improve the success rate of sending emails to external domains (Mailboxes other than @qq.com), it is recommended to add a TXT record for your domain.

Setup Method: Log in to your domain provider’s admin console, and go to [Domain Management -> Domain Resolution->Add Record] to add the TXT record value of Tencent Exmail. The record value requirements are as follows:
Host record: @ or empty
Record type: TXT record
The TXT record value is: v=spf1 include:spf.mail.qq.com ~all.

Tip: If multiple SPF record values are enabled in the domain console at the same time, in order to avoid affecting WeCom email sending, excess SPF records of the email service provider need to be deleted, and only the SPF record values required by WeCom email should be retained.

Reference: Tencent Cloud Setup Page
1.Log in to the [Domain Management System -> Add Resolution]
2.Set a TXT record at TXT (body text string) as follows: