daemon_timeout:
"How much time a Postfix daemon process may take to handle a request
before it is terminated"
What is "a request"? Is that the amount of time a client is connected?
Is that the amount of time between command request? Other? Does "a
request" cover multiple client connections?
smtpd_hard_error_limit:
"The maximal number of errors a remote SMTP client is allowed to
make without delivering mail."
Is RCPT user unknown count as an error towards this limit? And "without
delivering mail" means the counter is reset on a successful delivery so
this is not a total hard limit for the entire length of the client
connection?
smtpd_junk_command_limit:
"The number of junk commands that a remote SMTP client can send
before the Postfix SMTP server starts to increment the error counter
with each junk command."
Making sure i understand correctly, using this means junk commands count
as errors towards the hard error limit after giving the first x number
of freebies? If hard error limit is 3 and junk limit is 3 then after 6
junk commands postfix would end the connection?
