Cách xây dựng hệ thống email nội bộ
Với tình hình spam email hiện nay domain spoofing email 1 dạng phổ biến nhất để tấn công email.
Dùng email có domain gửi chính domain chúng ta luôn, thật nhức nhối và đâu.
Một hệ thống mặc dù đã có các bản ghi DNS: PTR, SPF vẫn bị nhé. Thiết nghỉ ngoài các bản ghi (MX, PTR, SPF) phải cần thêm 1 số cấu hình nâng cao: cần kết hợp tất cả PTR- Reverse IP, SPF với DKIM, DMARC
Dĩ nhiên ngoài giải pháp khác như thuê replay hay các giải pháp mail gateway bên ngoài, hoặc đẩy lên 365, gsuite.
Để nắm rõ hơn về bản ghi DNS bảo mật cho hệ thống email nội bộ (on-premise), mỗi Admin cần trang bị kiến thức để hiểu được các cơ chế hoạt động: PTR, SPF, DKIM, DMARC.
Phương Nguyễn có làm series về tổng quan email: cũng như giải thích các bản ghi chức năng chia sẻ cho các bạn nhé.
Các video liên quan Email
👉Danh sách Email tổng quan
👉Mail Exchanger MX DNS
👉PTR Record DNS
👉SPF record DNS
👉DKIM record DNS
👉DMARC record DNS
👉Công cụ troubleshooting email và mô hình email
👉Email Header cấu trúc
Đăng ký kênh để xem nhiều video mới nhất tại :
Created by: Phương Nguyễn
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