Exchange 2003: how to log IMAP sessions

by luca
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Today, I needed to record IMAP sessions on my Microsoft Exchange 2003 server to debug a client.

You can enable session logging with the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IMAP4Svc\Parameters

Two values control logging behavior:

  • IMAP4 Protocol Log Level ->logging level (0 = disabled, 5 = maximum);
  • IMAP4 Protocol Log Path -> folder logs will be saved in.

You have to restart Microsoft Exchange IMAP4 server.

In the specified folder, Exchange will create a logfile for each IMAP client:

Every file will record client’s sessions (commands and responses):

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