[Dovecot] May 05 07:20:21 imap: Warning: Time jumped forwards 16 seconds

[Charles Marcus]

On 2011-05-06 12:05 AM, Frank Bonnet wrote:
> Le 05/05/2011 20:49, Timo Sirainen a écrit :
>> On 5.5.2011, at 20.45, Spyros Tsiolis wrote:
>>> AFAIK, to keep good time on a linux machine inside the network,
>>> you need to run "ntpdate" and not "ntpd".

>> No no no! That just makes things worse! It's the most common reason
>> for these "Time jumped forwards/backwards" warnings.

> The machine runs FreeBSD not Linux :-)

So? The basic premise is still the same... the system clock should NEVER
jump time like that during normal operations, if it does, something is
seriously broken.

ntpdate, which causes large jumps, should only be used at boot time
BEFORE server processes are started, then ntp CLIENT keeps the systems
clock in sync using tiny increments, usually less than a second.

> it runs ntpd pointing to several reliables NTP servers
> since 5 years

So something changed/broke? Happens all the time...

-- 

Best regards,

Charles