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2013 Apr 26
1
Slow DNS warnings (proxy/auth)
Hello,
I've just finished transiting our proxies from perdition to dovecot
(2.1.7-7 Debian).
Yesterday 12 messages (all within the same second) like this caught my
attention:
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Apr 25 17:19:09 pp11 dovecot: auth: Warning: proxy(redacted at gol.com,xx.xx.xx.xx,<26hUEivbfQBlMrMS>): DNS lookup for mb04.dentaku.gol.com took 5.002 s
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Now this machine at that time was handling a load of about 2 logins per
second, about 20% of what it previously handled with perdition w/o a
hiccup.
It also...