Alibaba Mail:Bounce email indicates "spf check failed"

Problem description

An email is bounced, and the system returns the following error:

554 Reject by behaviour spam at Rcpt State(Connection IP address:x.x.x.x)ANTISPAM_BAT[01201311R506a, ay29a033002195083]: spf
check failed CONTINUE (in reply to RCPT TO command)

Cause

The error message indicates that the Sender Policy Framework (SPF) authentication failed, which caused the email to be bounced.

The SPF authentication failed because the sending IP address is not in the range specified by the SPF record.

Solution

Make sure that you use the correct SMTP server address to send emails.

• If you use an Alibaba Mail mailbox to send the email, see IMAP, POP, and SMTP server addresses and ports for Alibaba Mail.

  Check the DNS records for your domain name. Confirm that a TXT record with the value v=spf1 include the following:spf.sg.aliyun.com -all exists.

  If this record does not exist, or if its value is incorrect, add or modify the record.

  After the update, wait 10 to 20 minutes for the new record to take effect. Then, send a test email to confirm that the issue is resolved.

• If you do not use an Alibaba Mail mailbox:

  Contact the administrator of your email service. Ask the administrator to add the sending IP address to the SPF record. Before you add the IP address, make sure it is a trusted, dedicated IP address to prevent email spoofing.

v=spf1 include the following:spf.sg.aliyun.com -all

v=spf1 include the following:spf.hk.aliyun.com -all

v=spf1 include the following:spf.de.alibabacloud.com -all

v=spf1 include the following:spf.us.alibabacloud.com -all