[Dovecot] Time Moved Backwards Error Keeps Happening

[JackyC at umac.mo]

Hi all,

I am running dovecot version 1.1.1 (dovecot --version) and keeps to have 
time moved backwards problem.
I first found dovecot dead without obvious error message, but see the 
following when restart dovecot service by

# service dovecot restart

>Stopping Dovecot Imap:         [FAILED]
>Starting Dovecot Imap: Warning: Last died with error (see error log for 
more information): Time just moved backwards by 4398 seconds. This might 
cause a lot of problems, so I'll just kill myself now. 
http://wiki.dovecot.org/TimeMovedBackwards                              [ 
OK  ]

I followed the above official wiki link and apply the ntpd service for 
adjusting the server timestamp. After running the ntpd service, I found 
the server timestamp drift is only 14.333 microsecond, I think which would 
be reasonable.

But I still get the captioned error. Does anyone have the same experience? 
BTW, I couldn't find the error log message even I confirmed the info, 
error and debug log file by visiting this wiki document 
http://wiki.dovecot.org/Logging, does it really not log at the log file? I 
can just keep monitoring the log and use the following command to 
determine whether dovecot is running or not.

# service dovecot status

Thank you very much!

Yours Sincerely,
Jacky, Hoi Kei Chan,