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Hello,

Just thought I should post my thoughts on this as well as clarify the
way DynDNS implements bans on hostnames for abusive updates.

First, our host blocks are not triggered by a short update interval
itself.  Abuse blocks are triggered when a threshold is met of a number
of unnecessary updates being sent between good updates.  This means if
your update client is configured to send us updates every 5 minutes
regardless of whether your IP address has changed, it will trigger an
abuse block unless your IP address changes very often.

Setting the interval between checks to 5 minutes is a non-issue so long
as ddclient is configured to run as a daemon and only send updates as
necessary.  The proposed patch in bug 513626 will generate this
configuration out of the box with debconf for users that select DynDNS
as their service.

In my opinion the best fix for this is not adding warnings to ddclient
or preventing certain configurations entirely, but rather generating a
good default configuration for users based on their debconf answers.

Regards,

- --
Dan McCombs
Dynamic Network Services, Inc.
http://www.dyndns.com/
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