Borja Pacheco Ortega writes:
Dear Sam,Yes, we know that the Courier-authlib is which manages connections among LDAPs servers (in fact, we suffered the bug in the previous version, which didn't noticed closed connections, producing authentications errors.... ;-P )In this way, we are interested in verify why we measure much more connections (ones which use 389 TCP port) in our IMAP servers than in our LDAP ones (as Israel says, if we execute something like "netstat -an | grep 389 | wc -l" in our servers we see 4 connection into IMAP for each one into LDAPs. Is this a normal situation?
Are you using authenticated binds? The extra connections should all be stale sockets, which you can safely ignore. With authenticated binds there's as extra connection that gets created just for the purpose of binding -- and gets closed immediately thereafter. After a socket is closed, netstat can still show it, for some time, under certain conditions.
More over: is it possible to limit the number of opened connections for each Courier-authlib?
It's alreday limited.
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