Since I've resolved this issue, this is more to help others who may experience the same problem than to ask a question. While debugging a strange connection issues (frequent very slow connections) when running Cyrus imapd and pop3d with different configurations on different interfaces on the same machine, I found out the service names in cyrus.conf file don't allow hyphens, and that they silently discard the part after the hyphen, and the hype itself. So I had something vaguely like this in cyrus.conf: pop3-eth0 cmd="pop3d" listen="192.168.0.1:pop3" prefork=0 pop3-eth1 cmd="pop3d" listen="10.0.0.1:pop3" prefork=0 The parser interprets pop3-eth0 and pop3-eth1 as the same thing, which means that it tries to use the same lock files for both interfaces, which is bad (trust me). It turns out that something like this is better. Much better: pop3eth0 cmd="pop3d" listen="192.168.0.1:pop3" prefork=0 pop3eth1 cmd="pop3d" listen="10.0.0.1:pop3" prefork=0 After a lot of debugging and digging through the source, I found that the service names can only contain alphanumeric characters, truncating the service name at the first non-alphanumeric character. There are no warnings of duplicate service names if the duplicates result from service name truncation. Thanks Mark Disclaimer: http://www.peralex.com/disclaimer.html ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus