Following features are not documented, and some of them, are not widely tested. They are intended for advanced users only.

How to keep copies of all messages in user mailboxes (Pro version):

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How to bypass DNS server when delivering mail to specific domains (Pro version):

Create a text file with the same name, as the domain name in the mail server program directory, and place in that file names of mail exchangers for that domain, one exchanger per domain. You can create the file manually, or, you also can go to Tools - Domain Info, run a test for the domain, then right click the results window, and select Save MX Records option. To restore defaults, delete the file. It has to be done manually

What is the format of outbox files? (.out file format): (All versions)

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What is the format of address book? (Pro version)

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What is the format of .rec files, which contain list of disallowed, banned and trusted IP addresses?

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What is the format of XFer files (Pro version)?

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