On Sun, 2010-08-22 at 16:47 +0100, Ron Leach wrote: > But I want to force secure working - in some kind of secure-only mode, > so that internet-based users can reach the server securely. So I > changed the protocols to: > > protocol = imaps > > with: > > disable_plaintext_auth = yes > > > In this configuration, TB could not connect on 143, but only on 993, > *and*, only if TB's SSL option is selected (not its TLS option). This > was good, and bad.
You need either v2.0 or run two separate Dovecot installations with different configs. With v2.0 you could do simply: disable_plaintext_auth = yes remote_ip 10.0.0.0/8 { disable_plaintext_auth = no } or something like that.