does Zimbra really check MX when sending mail? The following problem occured few times, when domain and accounts are configured on zimbra server A and MX DNS record points on another server B: if someone sends a mail to that domain from zimbra webgui A, then mail is not routed outside to server B via SMTP.
It is routed inside Zimbra A and delivered to locally configured mailbox. What is wrong? Zimbra is looking first its local domain database, bypassing mx records?
Can someone confirms this behaviour?