Hi everybody, thanks a lot for thinking about my problem! Now I'm stuck with a lot of different opinions, but which way should one go? I hope I got the main thing right here: clustering with qmail-ldap clustering is not the solution, right?
Now basically two directions are to be chosen: 1.) I use two servers, both as MX records, 'rsync'-ing them, so if one fails, the other has still all mails for the pop useres. But how would that impact on performance if the server has to rsync every mail? Any guess or experiences? 2.) I use two servers, using their maildir via nfs. As I read, the position of stability with nfs is controversial, so how could one decide on this topic? I've working some nfs around here, but sure not on the servers, yet. How would the nfs writing slow down the qmail-server? (I've read about the 'Sistina GFS' and it sounds nice, but at least for me too expensive and I'd prefer a solution without kernel-patching etc.) What I'm wondering, are all these qmail-ldap installations without any 'hot-standby'? How are you maintaining your machines if you can't take them out of the service? What about failure of your machine? I guess I'm missing something here? Maybe someone has a 'hot standby' solution working somehow and could enlighten me? Thanks a lot! Best regards Manfred
