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Configure Exchange E-Mail Server Reverse DNS and MX Records Correctly
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日期：2025-09-17
Verify Reverse DNS Again it can take up to 48 hours for DNS to propagate but in most cases 12-24 hours. To verify that the RDNS entries have been added and are correct do the following: 1. Open a CMD prompt. 2. Type Ping -a 87.22.1.22 (This is the externa...看更多
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