On Mon, 2010-09-27 at 15:30 +0200, Harald Strack wrote: > Accordingly, mail_max_userip_connections limits the number of > connections from an IP. To deal with a scenario, when 400 Users behind a > NAT-gateway come from the same IP (the gateway), we have to set > mail_max_userip_connections = 400, right?
No, wrong. It's a user+ip combination. Each different user behind the same IP can use up to 10 connections with mail_max_userip_connections=10. BTW. What Dovecot version? If this isn't working as expected, maybe dovecot -n output could show something useful..
