We are running a Cyrus Murder with one proxy/MUPDATE master and one backend server which uses Cyrus Replication to replicate onto another host. All hosts are running Cyrus imapd 2.3.13 on Solaris 10 Update 7. Since moving all our mailboxes to the backend server in March we have seen 4 crashes on the backend server where it has refused to accept new LMTP connections[1] and, although the logs show it is accepting IMAP connections, no clients can get any response to the IMAP server. There don't appear to be any suspicious logs leading upto the event on the proxy server and nothing at all on the backend server. When trying to diagnose the issue, on any attempt to run ps, prstat or to HUP the syslogd process (to set the log level for imapd to "debug") the command hangs and cannot be exited with Ctrl+C. Similarly, attempts to kill the master process or shut down the system (even bypassing the shutdown scripts by using "reboot") do not have any effect other than hanging the shell in which the commands were issued. New shells can be opened and certain commands run, but we aren't much closer to knowing precisely what is wrong. The only way to bring the system back is to reset it via the on board console. My suspicion is somehow the behaviour in Cyrus is tickling a Solaris bug, but I wanted to check with other Cyrus admins to see if they have seen similar behaviour and had tracked it down to anything in particular. Regards, Dave. David Mayo Networks/Systems Administrator University of Bath Computing Services, UK [1] imapd.log: Jul 8 11:04:51 tyrrell-z1.bath.ac.uk lmtpunix[984]: [ID 130975 mail.error] connect(sauber.bath.ac.uk) failed: Connection timed out exim log: 2010-07-08 11:04:51 1OWnyD-0000Fo-Ic == XXXXX@xxxxxxxxxx R=imap T=cyrus_lmtp defer (-46): LMTP error after end of data: 451 4.4.3 Remote server unavailable ---- 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
