On 04 Apr 2016, at 09:49, Hendrik Velloen <hendri...@gmail.com> wrote: > > Hi > > dsync(hendr...@tcmvpn.co.za): Error: pop3c(196.26.136.162): AUTH PLAIN > failed: -ERR Invalid command, try one of: USER name, PASS string, APOP name > digest, QUIT
Dovecot tries to use AUTH PLAIN instead of the regular USER+PASS. I think you have set pop3c_master_user setting, which enables this behavior.
