Re: [Dovecot] Thunderbird got "Mail Server does not support secure authentication" ???

Adrian Mak wrote:

I have tested SASL thru pam-mysql is work properly before install dovecot

according to your config, you don't use pam.

auth_mechanisms = plain

It's been a while since I used 0.9, but for "secure auth" this should be mechanisms = cram-md5 plain