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 "firstname.lastname@example.org". 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?