Installation manual

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Example of SMTP response message:
Primary response code
Complementary status code
Description
451
4.7.1
Requested action aborted: local error in processing
Warning: Incorrect syntax in SMTP response codes may lead to malfunctioning of greylisting protection. As a result,
spam messages may be delivered to clients or messages may not be delivered at all.
Time limit for the initial connection denial (min.) - when a message is delivered for the first time and temporarily
refused, this parameter defines the time period during which the message will always be refused (measured from
the first refusal). After the defined time period has elapsed, the message will be successfully received. The minimum
value you can enter is 1 minute.
Unverified connections expiration time (hours) – this parameter defines the minimum time interval for which
the triplet data will be stored. A valid server must resend a desired message before this period expires. This value
must be greater than the value of Time limit for the initial connection denial.
Verified connections expiration time (days) – the minimum number of days for which the triplet information is
stored, during which emails from a particular sender will be received without any delay. This value must be greater
than the value of Unverified connections expiration time.
NOTE: You can also use system variables when defining the SMTP reject response.
3.3.2 Antispam engine
In here, you can configure Antispam engine parameters. You can do so by clicking on Setup... button. A window
will open where you can configure these Antispam engine parameters .
Message categorization
The ESET Mail Security Antispam engine assigns a spam score from 0 to 100 to every scanned message. By
changing the limits of spam scores in this section, you can influence:
1) whether a message will be classified as SPAM or not-SPAM. All messages that have a spam score equal to or
higher than the Spam score to treat a message as spam: value are considered SPAM. As a consequence,
actions set in the Transport agent will be applied to these messages.
2) if a message will be recorded in the antispam log (Tools > Log files > Antispam). All messages that have a
spam score value equal to or higher than the Spam score threshold to treat a message as probable spam or
probable clean: value are recorded by the log.
3) what section of antispam statistics will the message in question be counted in (Protection status > Statistics >
Mail server antispam protection):
Messages evaluated as SPAM – the message's spam score is equal to or higher than the value set for Spam score
to treat message as spam:
Messages evaluated as probably SPAM: - the message's spam score is equal to or higher than the value set for
Spam score threshold to treat a message as probable spam or probable clean:
Messages evaluated as probably NOT SPAM - the message's spam score is lower that the value set for Spam
score threshold to treat a message as probable spam or probable clean:
Messages evaluated as NOT SPAM – the message's spam score is equal or lower than the value set for Spam
score to treat message as not spam:
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