Try the 'here' link from the earlier post again.
Is this supposed to be a public DNS server pointing to your zimbra server? If it is then there's something wrong. What's the FQDN you're using for the zimbra server? Is it
- if that's it then it doesn't resolve to your server, if I do a telnet to port 25 on that address I get this:
That matches the IP address they have in the DNS records you've posted, there is already a server running at that IP address. So, you either have a mail server already running on your server or that's the wrong IP address. This doesn't appear to be a problem with zimbra, it's their setup of your server.
telnet fronneville.upkeeponline.com 25
Connected to fronneville.upkeeponline.com.
Escape character is '^]'.
220-fronneville.upkeeponline.com ESMTP Exim 4.52 #1 Fri, 03 Nov 2006 14:35:59 -0600
220-We do not authorize the use of this system to transport unsolicited,
220 and/or bulk e-mail.
Look at this post here - the NS & MX records have a period at the end of the line, your example doesn't.