Maxconcurrentconnectionattempts Option

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Introduced in release: 7 Update 3

Updated in release: 7.0.5


The maxconcurrentconnectionattempts option (available under mmp, imapproxy, and popproxy) specifies the number of outstanding connection attempts permitted to the same backend mailstore. If this is exceeded, users on that mailstore will have their connections rejected with a temporary service outage error. This limit prevents a DNS or mailstore outage of one server from consuming all the MMP worker threads.

The default has changed from 10 to 32 in the Messaging Server 7.0.5 release.


The default value is: 32


See also: