outlook 192.168.0.x can send! 10.0.0.x can't send!

[koby]

Hi, imap works perfectlly from any computer of the world, but with outlook I can send emails only from a local ip like 192.168.0.x. From a external ip like 10.0.0.x I can't!!

The message couldn't be delivered, one of the destinations has been rejected by the server. His mail adress is "user@gmail.com". Subject 'test from IP 10.0.0.x', Account: '192.168.0.x', Server: '192.168.0.x', Protocol: SMTP, Server's answer: '554 : Relay access denied', Port: 25, Security (SSL): yes, Server error: 554, Error number: 0x800CCC79

The zimbra server has a hosts allowed list? or something like that?

[phoenix]

Is the outlook user authenticating himself against the zimbra server with the ciorrect credentials? If so, then he should be able to send mail.

[koby]

yes, I only changed my ip (192.168.0.90) to an external ip (10.0.0.192) and then don't send mails

[phoenix]

Have you got 'Client must greet with a fully qualified hostname' set on the Zimbra server? If you have try disabling it.

Youll also need to reload postfix after changing that option.

[rsharpe]

If you are not using SMTP AUTH you will have to add your 10.0.0.x to the my networks attribute in postfix.