Am 26.02.2013 23:03, schrieb Charles Marcus:
Question: can you use arbitrary ports for secure IMAP/POP/SMTP? I don't see why not. You can use arbitrary ports for secure http...
you still refuse to understand the difference between STARTTLS and SSL/TLS, we are speaking about 143/993 to not confuse your ignorance by bliss more as it is already the case
postfix example for port 465, YES YOU CAN sue any other of the 65535 BUT if you configure "smtpd_tls_wrappermode=yes" for smtp on port 25 you will never ever receive any ssl/tls encrypted message because it is NOT STARTTLS and and least posfix does not support tsl_wrappermode for smtp AKA outgoing mail
http://www.postfix.org/TLS_README.html#client_tls
Although the Postfix SMTP client by itself doesn't support TLS wrapper mode, it is relatively easy to forward a connection through the stunnel program if Postfix needs to deliver mail to some legacy system that doesn't support STARTTLS
if you still refuse to understand the difference i fear nobody is able to help you on this world - people can write manpages for you but you have to read them by yur own
smtps inet n - n - 20 smtpd -o smtpd_sasl_auth_enable=yes -o smtpd_delay_reject=yes -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o smtpd_tls_wrappermode=yes