smtpd_*_rate_limit and anvil time unit

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smtpd_*_rate_limit and anvil time unit

Rosenbaum, Larry M.

We are considering using smtpd_client_message_rate_limit on our central (internal) mail servers to protect against mail floods when some departmental server goes crazy. Since normal mail from any particular client sometimes comes in bursts, I am considering increasing anvil_rate_time_unit. Are there any side effects to increasing this parameter? I am thinking about 10 minutes instead of 1 minute.

 

We are running Postfix 3.2.0 on RHEL6.

 

Thanks,

 

Larry M. Rosenbaum

Oak Ridge National Laboratory