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Thanks for the idea! I've added a test for PTR: https://github.com/JoshData/mailinabox/commit/ec11241a7a619a9d9cafb7696e96592b45dbf7b5 https://github.com/JoshD

• haroldp 12y ago
  You might also: * Test/alert if your PTR mismatches your HELO name * If your IP is on any of the major RBLs * Point admins toward AOL/Yahoo/ReturnPath whitelists and feedback loops.
  • btgeekboy 12y ago
    Additionally, you should test whether your PTR "smells" dynamic (i.e. contains part of your IP address in the PTR itself.) It may or may not be something within your control, but you should know as it may cause you problems later.