I just install the latest version vpopmail + courier-imap,
I found there is good ability to check password guess
through check the table vpopmail.vlog in mysql.

but is there a function of vpopmail to disable the connections
of such cracker's IP for minutes to protect account security??
or other ways??

and is it possible to configure courier-imap with same ability??
I found courier-imap only refer the auth type and no IP record.

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