91e62454_munin_conf___Munin__Default_value
[Directive] contact.contact.max_messages number [Explanation] Close (and reopen) command after given number of messages. E.g. if set to 1 for an email target, Munin sends 1 email for each warning/critical. Useful when relaying messages to external processes that may handle a limited number of simultaneous warnings. [Default value] 
Unlimited
munin.conf – Munin
Default value