Various foolproof methods and practices can be implemented to ensure that the limit of two is not exceeded.
The current limit for SPF void lookups specified in the RFC is 2. This specification can be confirmed in RFC7208 (Section 11.1), which indicates that there is a limit on the number of allowed SPF void lookups per SPF check. Those reading this article may have encountered error messages when checking protocol processing or email DMARC report data. To better understand, let me explain what SPF void lookup is. [Contents] ■ What is SPF Void Lookup? ■ How can we avoid the limitations of SPF Void Lookup? *You can view the detailed content of the blog through the related links. For more information, please feel free to contact us.
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We have established and operate measurement and monitoring centers in five cities across the country (Sapporo, Niigata, Tokyo, Osaka, and Fukuoka). The measurement and monitoring systems in operation there are also used by major IT companies such as Google and Microsoft, as well as e-commerce sites and mobile companies like Verizon. We monitor the communication status of your web systems from various locations 24/7, analyze the data, optimize it, and support high-speed and stable web operations. We can detect communication failures and server issues, which have been occurring frequently lately, through measurements from across the country and immediately raise alerts. Additionally, we provide a web performance tuning service that ensures the display speed of websites, web applications, and mobile applications is completed within one second nationwide, achieving a 98% yield. Based on statistical quality control, we conduct data collection and analysis, and guarantee the achievement of displaying within one second through genuine performance tuning that addresses issues from the source code. Please feel free to contact us if you have any requests.
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