All,

Is anyone using iptables (recent module), or any other alternatives, to
throttle the number of new imap or pop connections per minute? We have
some applications that like to login every second to pull mail using
imap, so we'd like to protect the entire dovecot server from these
applications. We've already made the change over to high-perf mode, but
we still need some type of denial of service protection. Any real-world
data would be appreciated.

Thanks!

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