Hello, I wanted to enable smtp over TLS (smtps), this FAQForge article suggests to uncomment the next line in master.cf Code: smtps inet n - - - - smtpd but this wouldn't work and my mail client (Thunderbird) stuck trying to connect to the server and returned with the timeout error message after a while. During my search I knew I had to uncomment the next two lines also. This page suggested to uncomment more lines but those only two lines was sufficient to make it worked. Code: -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes My questions are: * Are these settings the best for security and performance ? * Is the master.cf one of those files which got overwritten on the ISPConfig update ? and if so how to protect the modifications ? * I didn't find a method in ISPConfig GUI to enable smtps, Am I right or I missed something ? Server: Perfect ISPConfig-18.104.22.168p9 / Ubuntu-12.04 Please update the FAQForge article. Thank you in advance.