Hi, I have questions regarding murder scalability. Untill last week we had one imap server with about 50000 users and 2TB mailboxes. Server was overloaded and little slow but there was no troubles like connections drop and repeatedly asking users for password. Now we have that old server and three new servers in murder configuration (1 frontend, 1 murder master in 2 backends) and we have full troubles with users (almost all of them with pop3 accounts) complaining that mail clients repeatedly asking for password. Logs on fronted are full of lines: pop3[12914]: couldn't authenticate to backend server pop3[9822]: couldn't authenticate to backend server: authentication failure clients -> frontend and fronted -> backends authentications are made through sql sasl_auxprop_plugin (all servers runnig MySQL server which replicates table with usernames/passwords from same source). I've tried with saslauthd authentication between frontend and backends but there was no help. Is there any config options regarding timeouts and maximum connections between frontend and backend servers? Regards, Vladimir -- * Vladimir Nikolić* | Sistemski administrator / System Administrator *Amis* | Tržaška cesta 85 | 2000 Maribor | Slovenija *T*el: +386 080 20 10 | *F*aks: +386 2 620 6 333 | www.amis.net <http://www.amis.net> ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html