Login Fail Login:
在沒有 setting 時
.. postfix/smtpd[31858]: warning: unknown[r.r.r.r]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
UGFzc3dvcmQ6 在 base64 decodes 後是 "Password:"
如果要 log 詳細資料, 要改 Dovecot Setting
auth_verbose = yes
This put the information in
/etc/dovecot/info.log
... auth-worker: Info: sql([email protected],115.160.xxx.xxx): Password mismatch