Hi , I 'm having a problem when sending mail to certain domain only. Their mail server seems to reject my mail.
Here is the error:
host mail.x.x.x.x said: 554 5.7.1
<zimbra.xx.local>: Helo command rejected: Host not found (in reply to
RCPT TO command)
Do i need to change the hostname for the Zimbra server based on my actual domain?
my actual domain is yy.com and mx record is mail.yy.com
Now the setting in zimbra is zimbra.xx.local.
My Zimbra version is opensource and version5. It is setup behind a NAT router and with split DNS configuration. my DNS setting is based on zone xx.local.