smtp auth is not related to pop, unless you mean to use "pop before smtp"; if thats what you want, I don't know how it can be done. Instead, postfix uses login/pass:
/usr/share/doc/packages/postfix/README_FILES/SASL_README
I understood the question was more concerned with feeding inbound mail from his smtp server to his pop/imap server which were on different machines.
Authenticated smpt can be a bit tricky to set up, although yast has made it easier in the last few releases. Still you end up needing certs and self signed certs cause problems for some MUAs.
I see that Yast has 'Outgoing Mail' and 'Authentication' option in it. Is this what I want to make SMTP-AUTH ? All need just to make this server (postfix) can be use for our employee outside my network. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org