Displaying 1 result from an estimated 1 matches for "26hueivbfqblmrms".
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:
---
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
---
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 runs a local caching nameserver and the A record for the mailbox
server in questio...