Am 28.07.2014 um 13:09 schrieb Nick Edwards: > On 7/26/14, Robert Schetterer <r...@sys4.de> wrote: >> Am 25.07.2014 um 16:12 schrieb Eduardo Ramos: >>> I did not understand what the advantage of use dovecot LMTP with >>> director too. >> >> in "very short" words... >> with nfs ,the director should avoid concurrent events >> which may happen with lmtp too, depending to multiple server setup >> > > A few of us run large NFS based systems without director, however > mostly 99% pop3, not using director on imap has little impact either > from our tests, remember, director is only a couple years at most old, > people have been doing NFS mailstorage for decades, and with relation > to dovecot, ten years or so, the sky never collapsed back then, it > hasnt now either thus far :-> > using director was considered in risk assessment as its another point > of failure, and weighed against its claimed benefit, the decision was > made its not justified. > > note: we dont use lmtp, each mx mounts/stores directly to EMC storgage > with dovecot-lda, 14 front ends = 14 direct storages, sure, means > dovecot needs to be installed on each mx (but not listening), but it > eliminates the need for dedicated back ends to send to, each mx is > that backend. > > 12 pop3 servers, of note however, we use index:memory on pop3 and smtp's > > mail_location = maildir:/mail/%1n/%1.1n/%2.1n/%n/Maildir:INDEX=MEMORY > > only 3 imaps one of which is webmail, and of course we do not use > index:memory on them, these are behind real (serveriron's) load > balancers, so if using pretend load balancers :-> YMMV >
That looks fine but now whats the problem ? For sure there are many ways to goal. do what you like. I also have no director setup using cluster file systems with loadbalancers working fine. Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein