How to Authentication before sent mail

[ohm_g7]

If I sent mail my another client(not user zimbra)
but I used zimbra host for sent mail
that mail not need to authen before send

I follow this link http://wiki.zimbra.com/index.php?tit...Authentication
but not work.
I don't know how I do for authentication before sent mail

thank you for reply.

[phoenix]

You do not need to authenticate for sending mail when you are on the Trusted Networks, the article you followed is for authenticating your Zimbra server for relaying through your ISPs mail server. If you wish to have your users Authenticate then use port 587 as the submission port for the mail clients. Search the forums as this subject has been covered many time including answers.