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grumpiness
2011 Aug 26
4
limiting number of incorrect logins per connection
Hi Guys,
Running Dovecot 2 on my server. It is regularly getting dictionary auth
attacked. What I have noticed is that once connected to a pop3/imap
login session, you can send endless incorrect usernames+passwords
attempts. This is a problem for me... I use fail2ban to try and stop
these script kiddies. The problem is that fail2ban detects the bad
auths, firewalls the IP, however,