> > in the logs. We already tried raising the ulimit, the max number of > > open files. Once we reach about 25k connections, we're getting the > > error above... for all local addresses. It seems as if the system > > cannot create any more outgoing connections. > > I'd guess you're running out of TCP ports.
I think so too, but it's somewhat unlikely! We're using 10 outbound IP adresses! In a random fashion (and I'm seeing this on the backend server!) > > We're using multiple local addresses when proxying to the backends > > How are you doing the multiple local addresses? In v2.2.14 there's > login_source_ips setting intended to solve this problem. Exactly like that! > http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/Proxy -- [*] 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
