r1 - 2007-12-21 - 23:50:22 - BradKnowlesYou are here: NTP >  Support Web > AntiSpam
NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.

ntp-4.2.8p15 was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.

Please see the NTP Security Notice for vulnerability and mitigation details.

Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
The NTP Project uses a variety of standard anti-spam techniques to protect our mail server from excessive abuse from spammers, including but not limited to the following:

However, there are also certain anti-spam techniques we do not use, as we believe that they risk causing more harm than good. The harmful techniques we avoid include:

See MailingLists for additional anti-spam measures that are applied for the mailing lists hosted at ntp.org.

Please contact the Postmaster Services Team if you have any questions about our anti-spam methods. In addition, if you have any suggestions for methods that are not shown above, please let us know.

-- BradKnowles - 21 Dec 2007

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