Re: Received mail timestamp is off by 7 hours

From: Luke (luked_at_pobox.com)
Date: 03/02/05

  • Next message: Tom Trelvik: "Re: Received mail timestamp is off by 7 hours"
    Date: Wed, 2 Mar 2005 13:00:15 -0800 (PST)
    To: freebsd-questions@freebsd.org
    
    

    >> There's no excuse for a mailserver to not be synced to a NTP source.
    >
    > I'd extend that to apply to any server. Practically all the things a
    > server does are dependent in some way on the correct time.

    I have three excuses:
    1) NTP is difficult to configure. I've done it, but it wasn't trivial.
    2) Finding an NTP server willing to accept traffic from the public isn't
    easy either. For me it involved a scavenger hunt through out-of-date
    websites and a lot of failed attempts.
    3) If your clock tends to run noticably fast or slow, constant NTP
    corrections tend to do more harm than good, at least in my experience. It
    got to where I couldn't even run a buildworld because NTP kept tinkering
    with the clock in the middle of the process.
    _______________________________________________
    freebsd-questions@freebsd.org mailing list
    http://lists.freebsd.org/mailman/listinfo/freebsd-questions
    To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"


  • Next message: Tom Trelvik: "Re: Received mail timestamp is off by 7 hours"

    Relevant Pages

    • Re: Correcting my time servers clock drift on AlphaES40s / Tru64
      ... of a working NTP setup, but is not a design objective of NTP. ... is then a stratum 1 time server, Phillip looks to Terrance as its time server, ... with Terrance reading it's system clock. ... In that case, you need to create a clear server hierarchy, not to peer, ...
      (comp.protocols.time.ntp)
    • Re: Which release notes say sts$manager:utc$configure_tdf is obsolete
      ... >>in UTC, and after comparing it to the time as determined from its ... I think it will only attempt to change the clock if it is less than ... or a ST clock just after the spring forward, and NTP would fix it. ... guess of the real time that it makes from polling the time server. ...
      (comp.os.vms)
    • Re: NTP Loses sync over time.
      ... SNTP is not NTP and one can expect SNTP implementations to drift by ... the full clock frequency error between polls. ... A minute a day exceeds the capture range of the full version 4 NTP ... If the server is using a broken source ...
      (comp.protocols.time.ntp)
    • Re: Isolated Network Drift Problem
      ... No. PCs keep time even without NTP installed. ... clock reference will be able to provide time to NTP clients. ... page at ntp.org I'm thinking that a combination of a master server using ... If it is not possible for you to have your own stratum 1 time server, there are a fair number of them on the internet. ...
      (comp.protocols.time.ntp)
    • Re: Correcting my time servers clock drift on AlphaES40s / Tru64
      ... Keeping several machines together is a pleasant side-effect of a working NTP setup, but is not a design objective of NTP. ... is then a stratum 1 time server, Phillip looks to Terrance as its time server, and all is well. ... use ntp on phillip to get time from ntpd on Terrance, with Terrance reading it's system clock. ... In that case, you need to create a clear server hierarchy, not to peer, ...
      (comp.protocols.time.ntp)