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Use "cat /dev/null > /var/log/logfilename". That zeros out that file, deleting all the contents without deleting the file itself.
Chuck ---------- Original Message ----------- From: "Gregg K" <greg...@cox.net> To: "'BlueOnyx General Mailing List'" <blueonyx@mail.blueonyx.it> Sent: Fri, 3 Oct 2014 08:07:50 -0700 Subject: [BlueOnyx:16093] Manually clearing Failed Logins > Hello, > How would I go by manually clearing the failed login database? I have a server that has so many entries in there that it just [UTF-8?]wonât open anymore, it times out. I want to know if there is a way to manually do it through command line. > > Trying to figure out [UTF-8?]whatâs going on with this server, I noticed in the messages log file, 1000s of entries such as this: > Oct 3 08:02:48 ns1 saslauthd[11354]: do_auth : auth failure: [user=kramer] [service=smtp] [realm=] [mech=shadow] [reason=Unknown] > > They start at letter A and go all the way to letter Z in the alphabet trying out different names. I [UTF-8?]canât figure out the IPs doing this either, otherwise I would block them. A few times a day, Dovecot just gives up, and I have to manually restart it. I must say, they are quite persistent in trying. > I have Dfix installed, but I [UTF-8?]donât think [UTF-8?]itâs catching these particular tries. > > Thanks, > Gregg ------- End of Original Message ------- |
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