[Dovecot] Stupid question: Need to increase some connection limits

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When I switch from one network to another, I sometimes get dovecot
rejecting my connections.

The error I get in the log is similar to:

Sep 22 15:23:22 hostname dovecot: imap-login: Maximum number of connections from user+IP exceeded: user=<user>, method=METHOD, rip=1.2.3.4, lip=5.6.7.8

So the question is what parameter increases that? My five minutes of
looking has failed me.

Jon

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