Re: [Dovecot] POP3 Performance

One quick fix to try, if it's the login-time that's killing you, is to enable auth caching:

http://wiki2.dovecot.org/Authentication/Caching

that should offload your backend LDAP-servers from doing bind() on ever login, had a huge login performance impact for us. We use "auth_cache_size = 100 M", which gives us 99% cache hits:

dovecot: auth: Authentication cache hits 3654591/3669119 (99%)
dovecot: auth: Authentication cache inserts: positive: 588030 80931909B, negative: 912 49888B

-jf