[syslog-ng]DNS Problem?

[Leonard Mills]

Rob wrote:
>These are internal systems located in the same datacenter although not
>necessarily on the same network.  reverse lookups work, in fact for any
>system that has a problem, it's usually only one message out of hundreds
>for the day that has the problem, all other messages from those systems
>resolve fine.

Has anything changed in the way in which the DNS servers are being
maintained?  Perhaps someone is doing "ndc restart" on them concurrently
and effectively taking them out of service for a DNS timeout interval,
causing your server to "miss" the window for rDNS.

Len