在DNS配置当中，SPF和，PTR,TXT RECORD，都是为了更安全的邮件沟通及反垃圾邮件的设置。

今天在用DNSSTUFF作DNS LOOKUP REPORT时，产生了如下的WARNNING。：

An SPF (type 99) record was not found. This record type is planned to
supplant the SPF formatted TXT records, and emerging software may
eventually only process this record type.

   
 要解决起来说简单简单，说复杂复杂。如果有TXT记录存在,明确的SPF可要可不要，但建议有更好点。不影响功能。

至于TXT和SPF RECORD的关系。有以下叙述。

Sender Policy Framework (SPF) Records are used for email validation to mitigate spam. SPF records allow domain administrators to define all hosts allowed to send mail for a domain by creating a specific TXT record that is then used by mail exchangers to validate a senders identity. The data of an SPF record must be enclosed in quotations.

The original specifications for SPF required storage of SPF information for domains within TXT type records. Later specifications created the SPF type record. Currently, there are no SPF implementation that will not use TXT type records if they are present, so SPF type records are not required. There are, however, many SPF implementations that will not use SPF type records, so TXT records remain required. It is a good idea to have identical SPF information within a domain under both a TXT type record and an SPF type record.

SPF records can be generated using a free online tool from Microsoft

解决方法：

在不同的DNS解析那里，有不同的解决办法。

比如：

DNSMADEEASY，它将SPF和TXT独立设置。所以只需要将TXT的记录COPY到SPF就可以。功能测试完全通过。

GODADDY。它将SPF和TXT合并设置。这时可以COPY一条TXT，然后将V=SPF1更改为V=SPF3，强制为TYPE99。效果待验证。（补遗：无效果，，因为GODADDY现在MS不支持SPF TYPE99的）

参考贴：

http://www.webhostingtalk.com/showthread.php?t=1166779

 http://support.godaddy.com/groups/domains-management-and-services/forum/topic/premium-dns-and-missing-dns-record-type99-spf/