Monitoring: smtp-connections

The smtp-connections variable reports the number of incoming SMTP connections open at the moment. At least one of use-smtp, use-smtps, use-lmtp and use-smtp-submit must be enabled in order to have SMTP connections.

SMTP connections are usually short-lived, so this variable doesn't mean very much, except that if its value is high there probably is either a load problem or SMTP clients that cache connections.

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Last modified: 2010-11-19