A case where measures against impersonation were visualized and a high-risk email environment was collectively corrected!
We would like to introduce a case study on the implementation of "DMARC/25" at Techouse Inc. In their operations, the company exchanges numerous emails related to job postings, recruitment, and applications with various clients. The security risk of phishing emails is very high, necessitating the proper implementation of email domain authentication technology. With the introduction of "DMARC/25," the previously opaque email sending routes have been corrected. This is expected to lead to an improvement in the reputation score and a reduction in email delivery issues. [Challenges Before Implementation] ■ Due to the exchange of emails related to job postings, recruitment, and applications with clients, there is a high risk of phishing emails, making the implementation of email domain authentication necessary. ■ Numerous emails are sent from multiple domains, and there are several email sending infrastructures, resulting in an unclear application status of SPF and DKIM. ■ Email delivery issues, believed to be caused by a decrease in reputation score, have occurred, necessitating the implementation of email domain authentication technology to improve the reputation score. *For more details, please refer to the PDF document or feel free to contact us.
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【Effects After Implementation】 ■ We confirmed that there have been almost no instances of spoofing emails, which provided peace of mind. ■ We discovered email transmission routes that we were not fully aware of and were able to take measures such as stopping or switching them. ■ Perhaps due to the improvement in the reputation score, the number of undelivered emails has decreased. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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TwoFive Inc. was established in 2014 by a group of engineers with many years of experience in building and supporting large-scale email system infrastructures for major ISPs, ASPs, mobile operators, and large corporations, focusing on email system construction, email security, and thread intelligence as its core business. We have combined technical services with excellent products/solutions from both domestic and international sources. Currently, we are collaborating with industry associations and related service vendors to address new challenges not only in email systems but also in various messaging fields. Additionally, leveraging our extensive network with overseas vendors, we are introducing excellent products and solutions that support Japan's digital transformation (DX) to the Japanese market, beyond just the messaging field. In addition to our headquarters in Tokyo, we have a branch in Hanoi, Vietnam, where we conduct development and support. As a group of engineers with many years of experience in the email system infrastructure of major ISPs, ASPs, and mobile operators, we provide consulting on the design and construction of email systems, as well as security and other related matters. Please feel free to contact us if you have any requests.
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