Message Store Logging Example: Bad Password

When a user types an invalid password, “authentication” failure is logged, as opposed to a “user not found” message. The message “user not found” is the text passed to the client for security reasons, but the real reason (invalid password) is logged.

Example 21–11 Message Store Logging – Invalid Password

 [30/Aug/2004:16:53:05 -0700] vadar imapd[13027]: Account Notice: badlogin:
[192.18.126.64:40718] plaintext user1 authentication failure