只能有一条，但是可以一条记录里面加多个ip
不能. 参见From RFC 4408:3.1.2. Multiple DNS Records A domain name MUST NOT have multiple ...
Publishing an SPF record in your “example.com” DNS records tells the world whichserver IP addressesare authorized to send emails from “@example.com” email addresses. If you host your company email in cloud, your hosting provider should be able to provide you with instructions on how to ...
SPF Record: Notes: Do not enclose in quotes. Input something like v=spf1 a mx ~all. Except for %d, does not currently support records that include macros. Test an SPF record This test is for evaluating the performance of your record based on different IP addresses that mail might come ...
“а”– This mechanism defines a host’s A record (IP); if matched, it will pass. “mx”- Each domain name’s hosting email service has MX records, and there could be multiple MX records. These DNS records identify the email servers handling the mail service for the domain name. If...
This tag signals that the content of the SPF record for the included domain (examplesender.net) should be checked and the IP addresses it contains should also be considered authorized. Multiple domains can be included within an SPF record but this tag will only work for valid domains. ...
However, you can add multiple servers to the same SPF record. All you have to do is copy/paste your new SPF record in front of the old one and separate them with a single space. For example, to add Outlook to the SPF example we included in the previous section, it would look like...
Avoid using the redirect= mechanism in your SPF record: Using redirect= can limit users by not letting them add other sources. As organizations tend to use multiple email strategies, it can limit that process. Instead, include all authorized email sources in your SPF by "include:" and other...
An SPF record is a DNS TXT record containing a list of all the authorized mail servers for your website. Learn how to use SPF records here.
Your SPF record required more than 10 DNS Lookups to be performed during the test. The number of "include" mechanisms and chained "redirect' modifiers should be kept to a minimum. According to RFC 7208, 'SPF implementations MUST limit the number of mechanisms and modifiers that do DNS Lookups...