On 2016-08-11 20:10, Richard Klingler wrote:
Aug 11 20:05:39 <mail.info> marvin postfix/smtpd[19974]: initializing the server-side TLS engine Aug 11 20:05:39 <mail.info> marvin postfix/smtpd[19974]: connect from 93-152-67-113.itlab.managedbroadband.co.uk[93.152.67.113] Aug 11 20:05:41 <mail.warn> marvin postfix/smtpd[19974]: warning: SASL authentication failure: no user in db Aug 11 20:05:41 <mail.warn> marvin postfix/smtpd[19974]: warning: SASL authentication failure: no user in db Aug 11 20:05:41 <mail.warn> marvin postfix/smtpd[19974]: warning: 93-152-67-113.itlab.managedbroadband.co.uk[93.152.67.113]: SASL LOGIN authentication failed: authentication failure Aug 11 20:05:41 <mail.info> marvin postfix/smtpd[19974]: disconnect from 93-152-67-113.itlab.managedbroadband.co.uk[93.152.67.113]
disable sasl auth in main.cf, and just enable it in port 587 in master.cf solves something of it
after that firewall the ip you want to deny sasl auth
