Hello Bonadio , can you help me to activate SPF in zimbra¿?

What can i active SPF¿?

Thanks Bonadio

Hello, ¿do you know, when this problem will be resolve? ¿In the next version of zimbra?

Thanks

You can sen email from any valid account to any valid account in any domains. This is very dangerous if this problem is known in the company

OK, zimbra is not an open relay, but from extranet i can send mail without authentication if i know an valid account: for example:

telnet mail.probe.com 25
helo probe.com
mail from:...

Hello, i have a domain for examble probe.com, with ldap authentication, and i have the account probe@probe.com. If i know this account i can phishing this email doing this action:

cmd for open...